This would be awesome and I think it's a great spread of flavors while keeping the options down to a low number, also some interesting destiny hooks here (Shiradi might be good for both Fey and Old ones)...
Great old ones... there's something DDO is missing. When I did the Devourer stuff in Korthos as a newb I naturally assumed this Cthulhu inspired story line would be a featured part of the main game... sadly underdeveloped... Love the Cthulhu mythos and even generic "great old one" inspired stuff hooks me in. Would love to see a Warlock option that is all about chaos.
I see what you did there