1. When the Champion System comes out i'd like to see champion points given out for certain achievements. While the dye system was an improvement i feel that most people only used 1 or 2 dyes at most and the rest are never used. This would give people the ability to work towards certain things instead of Champion Points only being just from say every 100k xp ya earned.
2. This one I feel has been under utilized. Warhammer Online was the last game I played that had this option. Basically when killing a certain number of things in that game you could get a trait that gave you a bonus damage against it. For example..say I killed 10k skeletons. I'd get a trait that'd give me 5% bonus damage vs skeletons from now on. This is one of those things that Warhammer Online had that was a really good idea but other developers in other games didn't run with it.