Re: Stat Increase = Skill Increase?
Given that these days I'm not running or playing in a superheroic campaign, I'm not sure how the way I've always played would affect such a campaign, although it never seemed to give the GMs I played under any problems and as far as I know, they ran that way. The game I currently run is more Justice, Inc. based (the Hero system, and Justice, Inc./Hero Sys, ver.3 with some personal modifications).
That being said, within my game, an INT drain has an effect on your INT roll, as well as your perception roll. If you try to do something that requires INT, I will put a modifier on that roll if your INT is impaired in some way. When a player is allowed to raise a stat, I will allow that to also raise figured characteristics with the exception of speed, and to affect things like INT rolls, PER rolls, CVs, etc..
I think if skills go up with stats, then they go up too fast. I realize not everyone plays that way, and that I'm simplifying things a lot for my game in other ways, but it seems to work fine, and has a fairly realistic effect.