Lately I've seen a lot of issues on the forums with the coming tier set bonuses being too weak. There have been some comments about choosing whether to use your set bonuses or just using other pieces for itemization purposes.
I, personally, miss the 8 piece sets in PvE. I always thought they were fun. If they're having problems with set bonuses being too weak, then 8 pieces would only make having the set stronger, really. I understand that this would not always be the case, and that in some situations players would likely choose to disregard the final set bonus, but I still think it would be fun.
Does anyone else miss those 8 piece tiers!?!?