I think the complete rewrite that it got before full release both made it "less miserable" and gave it the plotting problems we've had discussions about. If the direction we saw in Early Access was kept it probably would have been a lot harsher, but it also probably made a lot more sense. So thinking of it like that, I'd prefer they lean back into what it was originally supposed to be. So I guess I technically vote for complete rewrite but it's more like wanting to undo the complete rewrite.

That's super impractical though so there's a different minor tweak they could make.
The good ending does have a very narrow path to get through it without anyone going Illithid, but it involves Gale's bomb and the epilogue he gets for that comes off needlessly depressing. It's fine for the most part, but the message makes it sound like his soul is just gone. Mystra didn't take it to Elysium, Withers didn't intervene, just nothing. If he's the origin you see Withers intervene, with the implication that he's trying to get to Gale's soul before Mystra does. Withers even explicitly alludes to how heavily his sacrifice weighs on the party. So why doesn't he chime in during the epilogue for any other origin? Even Lae'zel when eaten by Vlaakith gets thrown a bone with Withers talking more specifically about why she can't say hi. It's a weird discrepancy.

Anyway the tweak here would be to just have Withers chime in while you and Tara are reminiscing with a "hey yeah, his soul's fine. I'll let Mystra take him to Elysium in a bit" or something.