Here is where you post how you would implement houserules for spreading the love of a high magic campaign.
1: Bloodline Feat
Every time I look at bloodlines of mutations I can't help but think,"This would be good forinsert any class" The easiest way would be to make a bloodline feat. The character can only take this once, and ever after they can use all aspects of the bloodline. The bonus spells are considered to be on their spell list, possibly all that is on their spell list. While this may mean sorcerers can get a total of two bloodlines, they have to be complementary. Fire and water bloodlines cancel each other out.
2: Cantrips/orisons
Classes with limited spellcasting gain 1, 0 level spell known per level up to 5th level. They can cast 1, 0 level per day per level up to 5 max. This effects the bard, paladin, ranger, and any new classes of the same ilk.