Looking at this some more...
The dragon sorcerer is scary. He's as good at combat as a War cleric, straight up; and he can cast arcane spells in armor. Lots of them. Plus his nifty sorcerous powers. I'd like to see another bloodline to compare.
The sorcerer spell list is interesting. It's missing some spells I would have thought naturals, like Mage Hand and Thunder Wave. And if fey-bloodline sorcerers can't cast Ghost Sound, I'll be a little disappointed.
Personally, I think it makes much more sense for High Elves to be minor fey-bloodline sorcerers instead of minor wizards. I might just house-rule them to give a bonus to Cha instead of Int - fits the lore, too.
The warlock... Wow. Very impressive. I never really dug the warlock before (never saw the 4e version, though), but this has its appeal.
I sincerely hope that the 'Oak Princess' is only an example of a fey pact, I can certainly think of other possibilities.
Are all invocations open to all pacts, I wonder? Some of them might seem a little out of place - I mean, "Visage of the Summer Court" is very fey-themed, it's a little hard to imagine a devil granting that, at least with that name. And speaking of, that mass charm has no hit-point threshold. Typo?
Ritual casting, too. Question: If you have a multiclassed warlock/wizard, let's say - do the spells you've learned as a warlock count as spells in your wizard spellbook for preparation? It would seem reasonable, though two of the warlock spells are from the cleric list. Maybe only spells shared by the two lists can be prepared by a wizard?