Good news! The author of MBBSEmu just announced that RLogin support will be included in the next Private Alpha (e.g. Patreon-level supporters). So,
similar to BBSLink (but self-hosted of course) you can take users directly to
a MajorBBS door module (or, to the main menu of all your MBBS games similar to Doorparty! -- both excellent services BTW :)
Here's a video of it in action w/Mystic:
https://www.youtube.com/watch?v=hWNEUFsytYQ
Project info:
https://www.mbbsemu.com/
Module progress list:
https://www.mbbsemu.com/Modules
Just thought I'd share the joy :)
--- Mystic BBS v1.12 A46 2020/04/26 (Linux/64)
* Origin: Card & Claw BBS (21:4/158)