- Someone who is less of a hardliner: Stallman's dedication to free software is a good thing but his absolutist style of expressing it might have put a lot of people off who would otherwise not be opposed to the idea of free software
- Someone who understands the problems of free/open source software (contributors not getting paid, corporate exploitation, ...) and has progressive solutions for it
- Someone who everyone can (at least kinda) sympathize with and/or relate to: I believe Stallman generally has no bad intent but a lot of his mannerisms are just plain awkward or offensive to a lot of people. Normally that wouldn't matter but the president of the FSF (especially Stallman) is kinda "the face of free software". So showing that the world of free software is a progressive and inclusive space here might just benefit everyone.
We should still honor Stallman for what he did for free software (I mean he basically invented it) and we should IMO continue to welcome him in this space (maybe even as some kind of executive in the FSF because after all he's obviously not incompetent). But maybe he isn't the best person for the role of the president anymore these days.