Some people have been asking which communities they should join first, so I posted some remote communities you can subscribe to on the sidebar on the homepage :)
There's also this universal community search tool you can try using. If you find a community, just copy its URL and paste it in /search to subscribe to it here. This just goes to show that while there might not be many local communities here on lemmy.one yet, the beauty of the fediverse means that doesn't matter!
We do now! I think it'd certainly fit with the niche communities we've made so far.
No content yet, but feel free to post some stuff: https://possumpat.io/c/possums
There is an existing star trek topic thing I found in search. Is there a way to merge them? This is the one thing I'm going to be worried about is fragmentation of topics across instances.
This was also an issue on reddit tbh - several subreddits would spring up for multiple topics, like how there was r/gaming and r/games. Over time, I'm sure some instances will become the "default" for a given topic, and others will become defunct. Imo, this is a good thing. It's a pretty healthy way to grow communities and avoid lemmy.ml dominating every topic.