Agreed, a lot of these feats should be pre-epic. Take Spellcaster Harrier, for example. It was transformed into Mageslayer in one of the complete books, pre-epic, less requisites, and even some more better stuff.

Two feats worth putting pre-epic: Overwhelming and Destructive Critical. Put improved requiring BaB +6 (instead of +8), overwhelming requiring BaB +12, and Destructive requiring BaB +18, maybe some power attack feats, and you got a nice set of abilities for high level meelers.