Currently the URL structure is:
ores.wmflabs.org/$wikidbname/other-params. If we want to make this per-domain, it'd have to be wikidomain/some_prefix/other-params. And since ores needs dbname, we'll have to somehow translate the domain into dbname.
This could happen either in:
- Varnish rewrite
- uwsgi rewrite
- In the revscoring code itself