Roundup
Here's what I think are the best (and I hope the least controversial) feats from this thread.
rycanada
Restoration
Prerequisites: 6th level, ability to cast 3rd-level divine spells, Wisdom 18, Healing 9 ranks, Concentration 9 ranks.
Benefit: You can use Restoration, as the spell (paying the material component), with a casting time of 1 hour.
Stone to Flesh
Prerequisites: 6th level, ability to cast 3rd-level arcane spells, Intelligence 18, Spellcraft 9 ranks, Craft (Alchemy) 9 ranks.
Benefit: You can use stone to flesh, as the spell (paying the material component), with a casting time of 1 hour.
Shazman
Extra Domain Power (General)
Prerequisites: Wis 18 +, Cleric level 6, Knowledge (religion) 9 ranks, Skill Focus: Knowledge (religon)
Benefit: You gain the domain power of one additional domain associated with your deity. You may only take this feat once.
Extra Domain Access (General)
Prerequisities: Wis 18 +, Cleric level 6, Knowledge (religion) 9 ranks, Extra Domain Power, Skill Focus: Knowledge (religion)
Benefit: You gain access to the domain spell list of one additional domain assciated with your deity. This domain must be the same one as that chosen for the Extra Domain Power feat. You may only take this feat once.
comrade_raoul
Martial Veteran
Prerequisites: Fighter level 6th
Benefit: When determining whether or not you meet a feat's prerequisites, your base attack bonus is treated as two points higher than it actually is, and you are treated as having two more levels in the fighter class than you actually do. (For example, a 6th-level fighter with this feat can select feats that require eight fighter levels, or a base attack bonus of +8.)
Kunimatyu
Swift Metamagic:
When you take this feat, select a metamagic feat. As a swift action once per day, you may apply this metamagic feat to a spell you cast with no adjustment to the level of the spell cast.
Special: You must have a number of Swift metamagic feats equal to the level increase of your chosen metamagic, minus one, to take this feat. For example, Empower Spell, which boosts the level of a spell by 2, has a prerequisite of 1 Sudden feat. Split Ray, which has an increase of 1, would have no prerequisites. This feat may be taken multiple times.
Lord Tirian
Mental Domination
You're able to subjugate certain people's mind.
Prerequisite: Having charmed humanoid with HD equal or less than your caster level.
Benefit: Choose a humanoid with HD equal your caster level or less, you have currently charmed. Treat charm person as dominate person against this person.
Special: This feat can be taken several times. It applies to a different humanoid each time.
Khuxan
CASTER TRAINING (General)
You become a more accomplished spellcaster.
Requirements: Character level 6, caster level 1 or greater.
Benefit: Your caster level increases by 4, to a maximum of 6.
PoeticJustice
Expanded Knowledge
Prerequisite: Character Level 6th
Benefit: Choose a spellcasting class in which you have levels. You gain an additional spell known at any level you can cast from that class's spell list.
Expanded Casting
Prerequisite: Character Level 6th
Benefit: Choose a spellcasting class in which you have levels. You gain an additional spell slot at any level you can already cast.