I like that it's more similar to old.reddit.com. Already use mastodon, so federation is not a new concept for me (I'm sure a lot of people are still getting their heads around that).
The community is much smaller, but that's to be expected (and maybe a good thing). I miss the feeling of find super-niche hobby subreddits. But I guess those will come to Lemmy if/when the userbase grows.
PS: also, had no idea what sizz was. Looks cool. Is there a new home for it here?