Thanks Ryan! I intend to lead an E6 if I ever get my current campaign over with. Also, there may be some current epic feats that may still be usable in E6 without being overpowered (ex: Armor Skin [Maximum +5], Combat Archery, Dire Charge and others that have minimal prerequisites and either provide low, non game-breaking bonuses or waive certain restrictions).
Armor Skin for E6 would have the prerequisite: Con 15, +1 for each time it is taken.
@Kuni: Epic Prowess is a feat that grants +1 to all attacks and it seems to be over the top without the maximums also favoring certain classes.
In the case of Combat Training, my fix to that would be to allow it to be taken a number of times equal to the maximum BAB for the taker's class at L6, and simply act like an ultralight version of Epic Prowess (+n to all attacks, not to BAB). Finally, I would grant these prerequisites:
Str 13+, Dex 13+, Weapon Focus with at least two weapons, maximum BAB for your class.
That way classes with full progression still get their due. Also, no extra attacks are gained.
Hopefully the above feats don't share this affliction.