Mr. Teapot
First Post
Alternatively, just give a flat bonus to damage rolls with weapon keyword powers when using an oversized weapon. +1 damage per tier should be fairly okay, and this way, it stacks with Superior Weapon Proficiency and Weapon Focus.
The fact that Oversized stacks with both of those feats is part of what makes it broken. (Brutal is the other.) Why work to keep the ability broken when you could just as easily keep it balanced by making it Weapon Focus as a bonus feat?