One thing I've thought of is how feats are acquired; has anyone attempted to develop/implement a variant where accomplishing a "feat" grants bonuses of an appropriate sort? The original requirements would stay the same, and everyone would have a cap on known feats based on character and class level. This would also make getting some feats require explanations, when appropriate. Examples of acquisition methods (haven't put a lot of time into this, though):
Weapon Focus: Hit 10 times in a row in combat, spreadible over three days worth of fights if neccessary.
Weapon Specialization: Hit and deal damage 18 out of 20 attacks in combat (i.e., get past any damage reduction with or without enchantment doesn't matter), spreadible over three days worth of fights if neccessary.
Improved Critical: Score 3 critical hits within an appropriate number of consecutive turns of combat, determined by weapon's base crit range, spreadible over three days worth of fights if neccessary:
Natural 20: 20 attack rolls.
19-20: 17 attack rolls.
18-20: 14 attack rolls.
Skill Focus: Use a skill successfully at least 10 times in one week.
Dodge: Be missed in combat 5 times in a row.
Mobility: Be untouched by 5 consecutive attacks of opportunity.
Leadership: Somehow inspire someone to do something for you, or intimidate enough people to follow you around.
Maximize Spell: Get maximum damage with any spell twice in five castings.
Empower Spell: Get from 60-100% possible damage with any spell four times in six castings.
Spell Focus: Use a spell from the appropriate school that has a saving throw five times in succession, without the target succeeding at the save more than once. The target may not be a willing subject.
Two-Weapon Fighting: Strike with both weapons 3 out of 5 attacks with each.
Oversized Two-Weapon Fighting: Attack with two weapons, neither of which is light, and hit 4 out of 5 times with each weapon.
Like I said, I haven't put a lot of time into these so the actual requirements will probably be different, but the general idea is you perform a related task successfully in game in order to get the feat rather than just getting it at a level-up. This would probably work best if you like the training variant I saw somewhere; I think it was the DMG. I can't think right now; it's 2:24 AM here. Lights out.
Weapon Focus: Hit 10 times in a row in combat, spreadible over three days worth of fights if neccessary.
Weapon Specialization: Hit and deal damage 18 out of 20 attacks in combat (i.e., get past any damage reduction with or without enchantment doesn't matter), spreadible over three days worth of fights if neccessary.
Improved Critical: Score 3 critical hits within an appropriate number of consecutive turns of combat, determined by weapon's base crit range, spreadible over three days worth of fights if neccessary:
Natural 20: 20 attack rolls.
19-20: 17 attack rolls.
18-20: 14 attack rolls.
Skill Focus: Use a skill successfully at least 10 times in one week.
Dodge: Be missed in combat 5 times in a row.
Mobility: Be untouched by 5 consecutive attacks of opportunity.
Leadership: Somehow inspire someone to do something for you, or intimidate enough people to follow you around.
Maximize Spell: Get maximum damage with any spell twice in five castings.
Empower Spell: Get from 60-100% possible damage with any spell four times in six castings.
Spell Focus: Use a spell from the appropriate school that has a saving throw five times in succession, without the target succeeding at the save more than once. The target may not be a willing subject.
Two-Weapon Fighting: Strike with both weapons 3 out of 5 attacks with each.
Oversized Two-Weapon Fighting: Attack with two weapons, neither of which is light, and hit 4 out of 5 times with each weapon.
Like I said, I haven't put a lot of time into these so the actual requirements will probably be different, but the general idea is you perform a related task successfully in game in order to get the feat rather than just getting it at a level-up. This would probably work best if you like the training variant I saw somewhere; I think it was the DMG. I can't think right now; it's 2:24 AM here. Lights out.