I was thinking about the math behind power limitations and advantages, and was toying with a different way of calculating power costs... I was wondering what all of you may think, pro or con?
As it stands, you add all the advantages together and use that number to calculate the active points. For instance, a 30 pt EB with two +1/2 advantages would have 60 active points.
I think it might be more appropriate to apply each advantage seperately, calculating each in turn. A +1/2 advantage would raise the active points to 45; a second +1/2 advantage would raise it to 67 points.
Limitations would behave the same way... two -1/2 limitations would normally add to make a -1 limit, which drops a 67 pt power down to 33 pts. The method I'm thinking of, you would apply the limitations independently, and end up at 30 real points.
This requires a little more math... why do I think it might be better? I'll give a few reasons...
Small powers with lots of advantages.
One of the examples of abusive powers sometimes given is (for example) a 5 pt, 1d6 energy blast, with tons of advantages heaped on it. You can add four +1 advantages to a 5pt power, and the active cost is only 25 pts. If they are instead applied sequentially, the cost would be 80 points...
Cleaner math in some circumstances
Suppose I've created a really cool power, with three advantages and five limitations. Final cost is 30 pts. How much does it cost to make it armor piercing? Currently, you need to go back to the base cost to figure it; this way, you just apply the +1/2 to the final cost of 30 pts, making the cost 45 cpts.
Power Construction
Related to the above... I design a power. Let's say it's a tweaked energy blast that behaves a special way. It ends up costing 8 pts per d6 damage. Maybe I think it's really cool, and want to put it in my campaign's book-o-powers, for other characters to use.
By the rules, if somebody wanted to use that power, but put a +1 advantage on it, the cost would be 13 pts per d6 damage; they would have to reverse engineer the power, and apply the modifier to the 5pt/d6 cost of energy blast. Instead, if the modifiers were applied independently, the +1 would make the power cost 16pt/d6, which is the way you would expect it to work.
Comments? I realize that this would make characters absolutely incompatible with other campaigns, and so it is pretty much purely hypothetical...
Toonol