I say it’s a necessity not from a technical standpoint (of course you can just forward random ports directly to services), but from a “doing things the right way” standpoint. Especially if you’re intending to expose services which aren’t expressly designed with internet exposure in mind, a reverse proxy is hugely important for security as far as implementing SSL and authentication

They way that most projects I’ve seen that have multiple dependencies handle this is to just provide an example docker compose file. I really think that’s all you need. Personally I really don’t want an “overpackaged” solution, because that just adds bloat and takes away flexibility. I don’t need yet another proxy running, if I need to proxy access to some service, I’ll integrate it into my existing proxy.

My method for music requests right now is “you can text me if you need something added”

Overseerr has stated that they have no plans to implement music support. It’s on Jellyseerr’s roadmap, so maybe it will come there at some point, I guess we’ll see. Ultimately the issue is that Music is a pain to deal with and I think a lot of people don’t even have music libraries, so demand is likely lower