Re: SG-1 Asgard Teleport and Ships
Well as far as ship movement if it was teleport you would have to have the limitation "Must pass through the intervening space" given that Asgard ships can attack and be attacked in hyperspace.
On the Asgard transporters I would say that they are Teleport Area effect selective useable against others probably no more than a 3 inch radius. You can run it any way you like for special effect of only being able to transport people in certain places. If it's good for the story so be it. If you want to you could have 4 to 6 in an EC each one pertaining to whatever arc you decide. You also have to keep in mind the range of the power being determined by it's active points. You need to make sure it will reach the distance you need. A ranged attack power like this requires that your target be within range of the power.
As for transporter targeting I would probably use telescoping N-Ray with the thing I couldn't see through be the molten core of a planet eg. things of a certain temperature or greater.
Shockwave