[Escheton]

I have no trouble with it being inherited. It gives full bab, so its fine as a first level opposed to Illithid. It might even give a better explanation of his earlier life's focus on the beastly. (which makes his id as vast as his ego...:p)

What campaign setting were you thinking of?
Because I was considering campaign hooks. And as we now know that our personality will not live on, the enlightened will look for ways to extend their lives. Personally I prefer not to go alhoon or sand lich.

Perhaps an artifact hunt through Xoriat if we are doing an Eberron campaign.
Or a direct effort towards becoming a Deity if Forgotten realms.