I was not joking with the whole Omeluum / Blurg established couple vibes,
You know, I do have to agree with you there. I get that vibe too.
In another game I played, we had a rogue Ilithid, with every desire to be free and no desire to return to an elder brain, who ultimately joined the party. We had to work on his needs and eventually wrangled a situation where he could feed on the brain activity and emotive-chemical reactions of a volunteer without physically having to consume the brain meat or kill the person. It was a fairly intense session usually, since it needed to bring those responses out as potently as possible, and it wasn't ideal, and it left the volunteer (usually my alchemist character) loopy for a day or two afterwards whenever he needed it, but it was a solution. So, I'm a sucker for a sub plot that deals with rogue Illithids trying to find other ways to live that don't necessitate the deaths of sentient creatures. I hope they can find a way together ^.^