GREATER SPELL FOCUS
GREATER SPELL PENETRATION
AUGMENT SUMMONING
Greater things because they are boring. Heck why not have Greater Skill Focus and Greater Toughness. You could double the number of feats in the PHB without an ouce of thought. Greater Spell Focus gets doubled ire because its existance resulted in Spell Focus becoming +1 to DCs. Finally, Augment Summoning is just lame. It requires Spell Focus in a school that doesn't have a lot of saves (What's next, Augment Abjuration?), and it is very clunky, specialized, and underpowered.