What does it have to do with gaming? Or is there bug with my instance?
I'm seeing 
!gaming is a community for gaming noobs through gaming aficionados. Unlike !games, we don’t take ourselves quite as serious. Shitposts and memes are welcome.
1. Keep it civil.
Attack the argument, not the person. No racism/sexism/bigotry. Good faith argumentation only.
2. No sexism, racism, homophobia, transphobia or any other flavor of bigotry.
I should not need to explain this one.
3. No bots, spam or self-promotion.
Only approved bots, which follow the guidelines for bots set by the instance, are allowed.
4. Try not to repost anything posted within the past month.
Beyond that, go for it. Not everyone is on every site all the time.
I'm listening......
I found the post explaining how they rotate the banners, but it can be used to update the community icon too. The tool is on github and depends on contributing to AI Horde (crowd-sourced AI). Dunno if that's too much work.
If it is, there are AI site likes https://www.craiyon.com/ that allow generating images manually and uploading them manually. Maybe you could use that to make a banner and icon. If not, you could also pick something yourself (if you already have something in mind), or ask the community to share suggestions in a pinned post and the most liked on after a given timeframe (a week?) is picked. It could be a monthly / bi-monthly / quarterly / semestrial / yearly thing 🙂
Anti Commercial-AI license