I think that's even more scary. You're confirming that you've halted development on the Marathon-UI-for-Mesos because you are resource constrained. I've got a working Mesos+Marathon cluster. The marathon part is now a dead-end, but more importantly, I now know that dead-ending a user is an option for Mesosphere: and its either because Mesosphere doesn't care, or because it does care, but is so resource constrained that it has no choice. Either option is a huge red-flag.

I wish you had forked it. If you're resource constrained and need to meet goals for LargeCorp, then fork the entire front-end/back-end. The approach of just ditching the UI half of the app while you iterate the same backend but with the DC/OS UI is really what's causing the grief here.