I'd just be satisfied it they either prevent the illithid from dying in the first place, on the ship, or acknowledge if he does - it makes so little sense for him to die on the ship (he usually does, unless you sprint straight for the transponder), and then be there in the cutscene, and there afterwards, and all the rest.
True. When he dies on the ship I’ve been handwaving his reappearance as him being knocked unconscious by the cambions but saving against death and then coming round, but it would be far better if Larian just made sure the sequence of events worked!