Think "every thing was going well until the <big evil race> came"
Nightfall said:rycanada,
I guess my only gripe with your idea is this: Illithids and Aboleth, while not having a large racial hatred, don't really work that well UNLESS the aboleths got an edge somehow (IE control of the elder brain and/or a bunch of Ullithilids under their command.) Even then I'm a little hesistant. But otherwise I think you have a FINE idea for using abberations as a replacement race.
rycanada said:Oh, to clarify, I'm envisioning it as a slightly changed version of both (historically, not stats-wise), so Aboleths ARE the old Mind Flayers (like a third stage after ceremorphosis). Depending on how it worked out, I might make all Aboleths Savants just to beef them up as the "overlord" type.
Really, when you think about it, it'd be easy to portray the Skum corruption and Ceremorphosis as different aspects of the same horrible process.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.