I'll just be honest, from my perspective on lemmy everything outside of porn, linux and shitposts is lacking. Interaction outside the top of hot is a wasteland of non-existence, questions go undiscovered, comments are never read. We could all be more generous with upvotes to improve visibility.
For me sfw art communities, sports, and life protips would all be nice to see grow. I miss the old photoshopbattles too, but I think that's just fallen out of style in general.