All non-ability prerequisites remain.
For the tier requirements - have you actually read those feat? They are not overly powerful. Why are they even there? those feats are weak and waiting till 21st level to get a critical range of 19-20. Give me a break. Inescapable force and evasion. Sure, give it to the players whatever. What is so bad, break it?
I'm going to start here and then get to the rest of the stuff.
Expanding your weapon crit range is a
really big deal in 4e. Remember that there are no confirmation rolls, so any crit deals a ton of damage. Also, almost every magic weapon gives additional bonus damage on a crit. Finally, remember that extra damage dice are also all maximized, apart from those dice that only apply on a crit.
So, a Rogue with a +2 vicious dagger, Dex 20, Cha 18, and sneak attack will deal 4 (weapon) +11 (modifiers) +16 (sneak attack) + 2d12 on a crit. And they will crit
10% of the time. That's one out of every 10 attacks.
Expanding critical hit range is big in 4e, at every level.
All feat ability prerequisites and tier requirements are removed.
A couple notable ability prerequisites:
Armor requirements are ridiculous.
The spell caster +1 damage feats ability requirements are completely ridiculous.
Many of these ability requirements are nonsensical.
A couple notable tier requirements
Arcane recovery can actually make a wizard better.
The 19-20 crit feats can actually make those crit feats worthwhile before level 21+.
Thoughts on this?
I agree on the spellcaster +1 damage feats, for what it's worth. Those shouldn't have minimum requirements, and IMHO they should scale by tier like Weapon Focus does.
I disagree on armor requirements. Each point of AC is a pretty big deal with 4e combat math, so each one is a pretty major power boost. It also encourages characters to spread some ability score points around, if they would like the added protection better armor affords.
I also think removing all tier requirements from feats is a little ... crazy. The epic feats are just insanely better than lower-level feats. Heroic feats are often barely worthwhile. Epic feats are often must-haves.
-O