I don't think we will see any Director's Cut or further content for this. With sales that high, why even bother? It's not really economically prudent.
Depends on how much effort they put into it... after a launch this bad, a re-release isn't such a bad idea.
Fix bugs, make some small changes and call it "PC-exclusive Director's Cut" (so you don't need Techland & wasting money on console certification, retail version manufacturing & distribution). Of course, if it's a honest upgrade or a cash grab all depends on what they change.
To do a genuine upgrade and make Tides of Numenera go from trash to great, it would take
a lot of work. It's just so many small things all at once, and a few major ones, that need to be addressed and expanded upon. They'd have to review and remake the flow of the game and the narrative, re-place content & quests, fix the UI, add factions & foci, add Jerboa & The Oasis, rewrite/revisit many, many dialogues, add CNPC:s, unrandomize tidal affinity, tighten up combat, rebalance skill tests, and the list just goes on and on.
"Director's Cut will fix it" is a pipe dream. InXile would have to sink months of full-time, full-team development into it, and it's just not going to happen. It's just not a reasonable expectation. If they'll do anything, it's fixing the UI and adding a token list of Foci, similar to what they did for Wasteland 2: Definitive Console Edition, just substitute perks or traits for foci. But Torment would need more, a lot more, to become a good game.
Is the game even salvageable though? Band-aid fixes won't cut it.
Salvageable?
Is it? I would say yes. I maintain that it's close to being great, but that all the issues comes together for an utterly terrible whole. But that's only in a technical sense. I don't think it's financially defensible for someone looking to make money, and I think it's precisely the misunderstanding that this game had to make money on release/post-release that hamstrung it, and now inXile is in such a position in which it's simply a necessity.
I just don't think it's going to happen. It would involve inXile essentially continuing full development, and actually making in-depth changes even to the established narrative and the flow of the game. It would be no small feat and I've never seen that done. I doubt inXile is going to be the first.