"Greater" Improved Initiative

[Infiniti2000]

I also like the Scorpion clan feat in Rokugan (or maybe in OA, I can't remember anymore) that gives the character an INT bonus to Initiative - added to other bonuses. I like it because it doesn't just crank up the initiative bonus by a flat amount, instead making the character slightly MAD (Multi-Ability Dependent) which helps decrease power gaming slightly, IMO.

Allowing stackable, dynamic bonuses actually encourages power gaming. I can't see how it wouldn't. It doesn't create breadth of character, which is what you might want to occur in a non-powergaming point of view; it only gives the powergamer more options. This is not necessarily a bad thing, but I disagree with your perspective on it.