Feature request: "Return URL" for all auth, not just SSO

It would be really nice to get return domain config option for all auth, not just SSO.

In my use-case i've configured Warpgate to sit at auth subdomain and i'm binding services to other subdomains under the same domain, which works perfectly fine cookies-wise, but visiting the service sub-domain directly when user session isn't active opens login window on that same subdomain, which confuses password managers trying to auto-fill credentials

If I could set auth return-domain back to auth subdomain and all logins would happen there, that would solve this problem