The pondercat rss bot can already do that. You can create a community that gets posts from any number of RSS feeds.
Well, you can’t, but I can. I don’t want to make it available for anyone to use yet, because I don’t want an explosion of RSS spam, but if you want to connect some RSS feeds to a community and it’s not going to become obnoxious, I can do that for you.
Hackable front ends, I think, could be a huge deal. I don’t know how easy that is, but if it’s possible for someone to run a modified version of the frontend just for them out of a subdomain, without it being a security nightmare, that would solve a lot of these issues of wanting an extra button on the report page, but having to have it go from you to the site admin to Nutomic back to a code update to a PR and back down the chain and so on, before it can get done.
With some web apps, that’s easy, and Lemmy’s frontend and backend are already nicely separated. I don’t know if there have to be privileged things running in the frontend, though. I looked at it just now but I couldn’t completely sort out how realistic it is. That might mean it’s not very realistic.