Quinn is special case.
Let's face it.
The more popular a character is, the more content they get added and the more of that content the more popular they get. Scenes, quests, events, sets. All of it.
Brint/Brienne, Ryn, Cait is a prime examples of this.
While Quinn ... Well, uh. From what I've read over the course of a couple years, more often than not he either continues his run marathon or stay live quietly in the tavern, permanently.
And since we don't get new companions, ever, that's will not do. Not at all. That's should be get fixed.
Need a spark. A spark that ignites interest to the character. To naturally save him from oblivion.
That spark could be the option to turn him into a hot babe! Or a futa perhaps. Or just let us fuck him ffs. Anything will work better than what does now.
Some will say "it'll ruin him", maybe, but right now this character is on a train full steam ahead into the land of "Ishestillinthegame".