lack of "funny meme and jokes' posts
This is it for me. The Pavlovian posting and upvoting of shitty jokes in every. single. thread. I haven't bothered with reddit's comment section in years because of it. Here, the comments so far seem chill and appropriate for the posts.
That's the other thing, people wouldn't do that if it didn't get them karma every single time. Karma isn't publicly displayed on Lemmy, and if the vision of very spread out communities comes to fruition it also just wouldn't make sense anyway.
Yes, I hope Karma won't be as prominent as on reddit, limiting jokes to those that are appropriate.