One of the big ones for me is Thief. Square-Enix attempted to bring it back in 2014 with a reboot that felt like it was sorta attempting to capitalize on the popularity of Dishonored, and they did have development handled by Eidos Montreal (the same studio that successfully brought back Deus Ex a couple years earlier with Human Revolution), BUT this reboot was handled by Eidos Montreal's "B team" and in the end just felt underwhelming. It was so underwhelming that I'd legit argue Dishonored is a better sequel to Thief than Thief 2014, even if Dishonored is a bit closer in style to Deus Ex and Bioshock (what kinda helps cement this is Dishonored 2 even got Garret's original voice actor to play Corvo, while Thief 2014 didn't).
Another one is Duke Nukem, as the new Alien World Order campaign in the World Tour Edition showed that making good modern Duke Nukem levels is certainly possible if the right people are involved (and you don't have George Broussard trying to get the team to implement every new technology he sees).
An interesting thing that both IPs have in common is both are now under the ownership of Embracer Group (Gearbox was bought out by Embracer in 2021), and given this company's track record of reviving old IPs from their catalog for modern audiences it's possible maybe a revival is likely now. Yeah Duke Nukem is also owned by Gearbox and infamous greasemeister Randy Pitchford seems uninterested in doing anything with the IP, but now he answers to Embracer's higher ups so if Embracer wants a new Duke Nukem then it'll likely happen.