Lawsuit would not be wise. Nintendo is working outside of the law right now which is where they’re weak. Suyu and the other forks just need to move their repo to a git hoster not based in the US so that they’re not threatened by DMCA (which is a scare tactic anyways but github is going to comply with regardless). The suyu team is not breaking any laws nor have they gone against the terms of the lawsuit against yuzu.