I really miss the worldbuilding subreddit. There was always cool stuff to see and read because the community was big. The equivalent !worldbuilding@lemmy.world is much less active, and I seem to be the most frequent poster. I think conlanging is also underrepresented, but that’s even more niche.

I also wish the threadiverse had a large and diverse-enough userbase to support the sort of hyper-specific subs that show pictures of a specific animal (or plant) doing a specific thing (looking at you, /r/treessuckingatthings). The community was even big enough to spawn subs based purely on inside jokes from other subs. I’m pretty sure the above mentioned /r/treessuckingatthings inspired /r/treessuckingonthings, and while I can’t confirm, /r/talesfromcavesupport was probably from a joke in /r/talesfromtechsupport.

There were even multiple subs for the same content that would have slightly different community culture, and both subs would be reasonably active. /r/dogs didn’t allow pictures, so you had /r/picturesofdogs, not to mention active subs for every breed of dog, and often every coat pattern of said breed. Yellow, black, and chocolate labs all had their own active subs, and that’s on top of the regular labrador sub.

As it is, Lemmy is too small, and the userbase is either tankies or almost but not quite tankies, repelling people who aren’t tankies.