And why not come up with a simple formula? Well, okay, I'm not insisting. I just expressed my opinion about this subordination of Illithids.
Regarding the distribution of characteristics, we can hold a vote... Or, once again, let the authors decide. ;)
2Vaishan
No, they will be mages; why have warriors when there are already plenty of them! There are 5 races that lean more towards warriors, compared to only 3 races that are mages.