That’s a good idea. I think it’s a bit problematic under these circumstances since OP wants to host game files which are probably some larger binaries. And that’s going to show a different usage pattern and more traffic than the usual code. I don’t know if they monitor things like that and remove these repos. But I have to remember that idea.

And an idea regarding the links: I’ve tried some emulators and do some retrogaming every now and the. Usually these projects take some care to not list the sites with the ROM collections on their official pages. As a user you usually go to archive.org and download things from there or scroll through their forum or subreddit and that kind of info pops up pretty quickly. So once they have an active community it spreads via word of mouth. Maybe you can also post a sticky you’re not affiliated with websites like X and Y, but you’d have to ask a lawyer if that’s alright.