This may be unpopular to some, but I think there should be more interoperability between Lemmy and Mastadon. I know from Mastadon you can @mention Lemmy communities, but most users don’t know about that. Maybe depending on the privacy settings of a Mastadon post, if that could be “forwarded” to a Lemmy community as a post, and it would be useful for many who follow a community in Lemmy but not the author or hashtag in Mastadon. It’d also be nice to be able to follow people who use Mastadon and have that show up in your feed on Lemmy.