Outsider

Are you are trying to recreate the gates from the TV/movie canon, or are you just getting the game mechanics down for how the concept would work?
 
If the former, then you should probably up the Increased Mass significantly.  
 
The second series, Stargate Atlantis, introduced the Puddle Jumper, a small spacecraft capable of transiting a stargate.   I don't know how official it is, but the Stargate wiki says a Jumper is a 4.7m diameter x 8m long cylinder, and can carry 20 people.
 
If you go by dimensions, such a vehicle is 9-10 steps up on the Vehicle Size Table, and masses 50-100 tons.   This may seem overly heavy, but it does fit with canon. There was an episode where a Jumper ditched in the ocean, and started slowly sinking, meaning its average density is greater than seawater.   A 4.7m diameter x 8m cylinder displaces ~140 tons of water, so even 100 tons might be light, depending on how much of the overall volume of the Jumper ins't watertight and/or solid.
 
Even if we ignore the sinking issue as 'dramatic license' on the part of the writers, declare the volume of the vehicle to be cosmetic, and just go with the STR required to lift the 20 HERO system people (2000kg) to determine where on the Vehicle Size Table to place the Jumper, we still need to go 5 steps up, meaning a 3200Kg vehicle.   Any lighter, and we'd be in danger of the passengers being able to pick the Jumper up and carry it off, which seems very much not supported by the shows as a possibility.  
 
So a stargate would require either 1024x or 2048x Increased Mass to transit a Puddle Jumper and passengers, if we're going with the dimensions and buoyancy line of reasoning to establish mass, or 64x Increased Mass (at a minimum) if we're going with the much looser "ignore the tables, but it still didn't look light enough for a dozen Marines to pick up or shift much" line of reasoning.
 
Now, it is possible that Pegasus Galaxy gates have a much higher mass limit than Milky Way Galaxy gates.  They do look a lot slicker, like a more developed technology.  Also supporting this theory is how the gate bridge* was used in the show.   I don't recall them ever taking a Jumper through a Milky Way side gate, so maybe they couldn't?
 
 
*in Stargate Atlantis, they established a gate bridge between the two galaxies that forwarded travelers through a series of gates without the necessity of materializing in between, except at the midpoint station.  At midpoint, one transferred from the Pegasus gate system to the Milky Way gate system.

Re: High level Cramming
 

Re: Complex Sectional Armor
 
Chances in 216 to hit a given location :
 
_3 : _1
_4 : _3
_5 : _6
_6 : 10
_7 : 15
_8 : 21
_9 : 25
10 : 27
11 : 27
12 : 25
13 : 21
14 : 15
15 : 10
16 : _6
17 : _3
18 : _1
 
Activation roll vs chance to work in 216ths "
_8- : 56
_9- : 81
10- : 108
11- : 135
13- : 181
14- : 196
15- : 206
 
Just add up the value of the covered locations from table 1, and compare with table 2.
 
Example : Head, vitals, and stomach (locations 3, 4, 5, 12, 13) have a 1, 3, 6, 25, and 21 out of 216 chance of being hit, or 56 chances out of 216 total. 56/216ths covered is the equivalent of an 8- Activation, so defenses that only work against hits to those locations are bought with a -2 limitation.
 
 
 
 
Or at least that's how I'd do it.

In a setting with a lot of magic (high fantasy) this may not work, but in a low magic or no magic setting where guns are rare, one could give them a linked Presence Attack against anything not specifically trained to face them.   The flash, bang, and smoke tend to upset the horses, and sometimes the peasants.  They tend to shy away from and resist orders to approach the source, and possibly make a ride or leadership check necessary.   PCs should have enough PRE that the attack largely bounces off them.

Magic armor could have a degree of "dune shield" in it.   The faster a projectile is moving, the more the magic protects.   An arrow moving at 200 fps and a musket ball moving at 600 fps might (magically and oh so conveniently) end up with about the same effect after armor.    

If he were shy and named Roy, he could be her coy goy boy toy Roy.

If he were shy and named Roy, he could be her coy goy boy toy Roy.

If he were shy and named Roy, he could be her coy goy boy toy Roy.

The UK has 92 rest areas supported by 66 million people.  The USA (lower 48 only) has 2740 rest areas supported by 319 million people.
 
The UK ones are generally farmed out to private industry to run and profit from, while the US ones are a free public service.

I guess they figure a bad cop is better than no cop.  If only more progressive, enlightened young people went into law enforcement instead of just complaining about law enforcement...
 
But yeah...no cop would be better than this guy, so your bad, Cleveland PD.

It may be the police in theory, but it isn't in fact any longer.  Or such is my point. 

Serious question...
 
Fergusson is 2/3 African American.   Why don't they just vote their racist government out?

Serious question...
 
Fergusson is 2/3 African American.   Why don't they just vote their racist government out?

Serious question...
 
Fergusson is 2/3 African American.   Why don't they just vote their racist government out?

Serious question...
 
Fergusson is 2/3 African American.   Why don't they just vote their racist government out?

Re: Jane's Superhumans
 

 
Living in a town with a guy with explosive skills is a lot safer. Such a guy will almost certainly be unable to amass enough explosives to destroy the entire city without getting caught and stopped before his plan comes to fruition. Several freight train loads of high explosive are a tad difficult to acquire, load, unload, or place secretly and alone.
 
 

 
Living in a town with WMDman is just as dangerous as living in a town with WMDman after someone unsuccessfully tried to attack him. The evil Mindcontrolman can come along at any moment and Mind Control him into using his power, after all. Or sufficiently dedicated and clever normals could just kidnap and brainwash him into blowing up the city. What is he gonna do to stop them? Blow up the city?
 
The only ways to make WMD man safe to be around is to either kill him, or to somehow permanently remove his power. Barring that, keep him under deep cover and in an unpopulated region. If he is a good guy he will recognize the need for this and comply. If he isnt or doesnt, then he's as good as destroyed the city already, and should be treated accordingly.
 
Or we could all just acclaim him as our new superpowered overlord, and maybe volunteer to round up others to toil in his underground nectar mines.
 

 
If said militias had prohibited weapons, or insisted on bearing their nominally legal ones in places or ways that are prohibited, the government would come down on them fast enough.

Re: A black hole in orbit: what would it be like?
 
It would change earth's energy balance a tiny, inconsequential bit, in that we wouldnt be getting the infintessimal increase in incoming photons from the moon (reflected), and we would be getting a little tiny bit more energy from the sun, as lunar eclipses would no longer block incoming solar energy for a few minutes a year, as they used to.
 
The main things I'd be worried about would be (assuming the hard radiation emission is negligible... someone do the math!) is the effect on the ecosystemof having no visible moon. Do some species use the moon as a visible cue as to when to do things, or rely on its light (faint though it is) to aid them in the hunting/other nocturnal persuits?