They’re all going to have bad quirks, if not at the start then eventually. There are ways to remove them in the hamlet, but unless it’s catastrophically bad and on a high-level hero, I don’t think it’s worth it, especially because they could get something worse next time you use them. The entire game is about making the best of bad situations though, so in most cases I think you’re better off getting on with them and soldiering through the bad quirks instead of endlessly churning them in and out. There are exceptions (if a hero has negatives to dodge and speed springs to mind), but generally a few bad quirks on a hero are nothing to get too worried about. The perfect hero doesn’t exist in this game.
Oh, kleptomaniac and light sensitive are super annoying early on too, but even those are less of a concern later when you have more money and better stress relief (and light sensitive isn’t even a burden when you want to do dark runs for more rewards).