I would love a game with a timeloop built into the discovery, combat, and storytelling mechanics, a la Deathloop and Prey: Mooncrash, but instead of a first person shooter about murder, make it an isometric heist game that doesn’t hold your hand. You gather clues and tips and tricks through each loop and through exploration, until you build a final plan of attack to end the loop.
Deathloop’s biggest flaw was not playing into the fact that it was, at its core, a puzzle game. The objective markers and notes kind of ruined the climax of the game for me. Absolutely incredible otherwise.
Loop Hero has some interesting time loop stuff that is very well merged into the story and mechanics. It isn't a particularly complex game and is a rogue-lite
There was at least one timeloop game based on a murder mystery that got pretty good reviews that came out on Steam a couple years ago and had an isometric perspective. I don't remember the name, but those keywords are probably enough.
Also of course there's 12 Minutes, which could be described is basically identical wording but is actually not the game I was thinking of.
Edit: "The Sexy Brutale" is what I was thinking of. Other titles include The Forgotten City and Elsinore.