The image board style works well for forums, ala 4chan, but the issue with some of those is mainly the lack of any moderation. I feel like there could be a Fediverse version of image board forums that work really well.

Namely, they should not have anonymous posting/commenting and should have active moderation.

Imo, image boards were pretty peak for memes and generating original content, when there was any semblance of moderation.