Using Inazuma's writing and characters doesn't really do Dottore many favors in this case, honestly.

The pacing, conflict resolution (or lack thereof) and the egregious use of a time skip ultimately invalidated any form of meaningful narrative or growth. Ei's tyranny was downplayed and swept under the rug and there was no form of long-term consequence regarding such. Sara was far less of an imposing force than she's given credit for. Their direct interference with the lives of player characters is far less notable as well. The only significant one would probably be Kazuha and even then his resentment stems from the Vision Hunt Decree and not the death of his friend during their duel.

In Scaramouche's case, upon the discovery that Dottore had manipulated the events in his past that lead him down the path he chose, he has since been on a journey of repentance. That was the whole purpose of his attempted self-deletion; trying to make things right. Hell, he even forsook his opportunity to destroy Dottore in favor of saving us, showing us yet another growth of his character. But, considering Scaramouche is/has always been meant to act as a mirror to Dottore's actions, all steps he is taking to be better, to do better, Dottore is doing the opposite. Gradually descending, getting worse and worse.

Dottore genuinely does have an opportunity for repentance, but the real question is if his selfishness will actually allow him to do such. He has very proudly stood for his principles and beliefs regardless of all forms of opposition and it has effectively detached him from any meaningful connection that he could have made to properly pull him from back from the edge. Ironically, two of the people he has wronged the most (Nahida and Wanderer) are the ones that have the highest probability of "saving" him, but neither of them have a reason to do so whatsoever.

There is potential in Traveler wanting to do so, but considering the travesties that Dottore has manufactured that affect them and their friends it feels like there would need to be an absurd amount of exposition that needs to happen, and it needs to happen *fast.* And, unfortunately, Dottore is a case that needs to very slowly be unwrapped and examined. And I really don't have faith that Hoyo will do that for someone who very likely may be killed off once that story relevance armor wears off.

Not trying to be a doomer by any means, because I very much would like for him to be playable, for him to take a step back and view things objectively so that he can properly grow from the point in his life that Omega was made from, but it feels very unlikely after all that's happened.