Metamagician Feats

Random Wizard (Sorcerer, Cleric, Druid, whatever) feats, meant to somewhat replace (in utility, if not mechanics) the Sudden X feats that are not OGL.

Metamagician
Prerequisites: At least three metamagic feats with at least a +1 level modifier
Benefits: You gain daily bonus spell levels equal to your primary spellcasting modifier (Int for Wizards, Wisdom for Clerics and Druids, Charisma for Sorcerers) for the purposes of empowering spells you cast with Metamagic. These bonus levels refresh when you prepare spells.
Special: If you have multiple spellcasting classes, using different primary spellcasting attributes, you gain multiple pools of this feature, for each applicable attribute.

Example: A Sorcerer with Cha 17 gets 3 ‘free’ levels of metamagic per day, that she can use either singly or all at once, to offset the level adjustment for any spell(s) she casts with metamagic. Once she has used all three of these bonus levels, she must wait until she next refreshes her daily allotment of spell slots before she can use them again.

Example 2: A Mystic Theurge (Cleric / Wizard) with Wisdom 16 and Intelligence 15 gains 3 'free' levels of metamagic offset for use with Cleric spells, and 2 'free' levels of metamagic offset for use with Wizard spells. If she later gains a level of Druid or Adept, she shares the same 3 levels used for Clerical casting.

Boundless Reserves
Prerequisites: Metamagican
Benefits: You can sacrifice prepared spells (or spell slots) to recharge your reserve of bonus spell levels (from Metamagician). You can only sacrifice one spell in this manner in a process that takes a full minute, and cannot be repeated for 1 hour once performed. For each spell level of the sacrificed spell, you gain one level of ‘metamagic offset’ (as per the Metamagician feat), up to your normal maximum. Extra levels are wasted.