Could it be synced back to OSM so that people can submit in your nicer interface but it'll flow back into OSM? I'm honestly not super familiar how open OSM is for things like that.
There's lots of prior art, such as https://wheelmap.org/ -- so I imagine OSM is somewhat open to this sort of thing. Might be worth looking at how Wheelmap edits OSM. I believe it's from a generic account and edits are tagged such to make it clear it's from a member of the public.
You could also implement OAuth (sign-in with OSM) to do edits, similar to how some tools like https://maproulette.org/ work, though you'll get less contributions if you don't have an option for anonymous public edits.
