It would be amazing if Lemmy implemented silencing/muting instances, it would make a great middle ground between fully federating or defederating so that it's less binary and absolutist, and allows more individual freedom within mod actions. I think having a spectrum of choices when it comes to interaction will help social media networks a lot, because it means there are more ways to deal with problems and it more mirrors real life social groups, which means the dynamics are less artificial and distorted.