This is shameless self-promotion, but part of a working theory I have that Mastodon users have more to offer Lemmy than your average Reddit user. See my other post about it here: https://lemmy.blahaj.zone/post/2174573
TLDR: Mastodon users are inherently active posters and already understand federation. Also there are MILLIONS of them.
Please consider following if you’d like to get more Lemmy in your Mastodon feed or more Mastodon users in your Lemmy feed!
The mastodon interface doesn’t show the threading of a conversation, so it’s super easy to get lost as to what’s a reply to what. As a result, a mastodon reply to a thread can often be made at an arbitrary point and without really having a grasp on what else has been said and why, because it’s all just presented in flattened feed.