Honestly, I don't necessarily think you need a comaintainer inside Fedora, you need a cross distro team to be able to maintain the non-packaging system specific bits in a shared workload sort of way.
You should try to have a chat with unpaid volunteers from any other Ubuntu distribution who has beat their head against this particular wall at some point... especially anyone from debian who is keen on using the compiz based unity in their distro of choice. There was an effort made in debian proper, it stalled out due to the early patching requirements.
Find those people and see if you can have a discussion about how to keep the code in a usable state across the distro boundaries with them and have the original Canonical devs in the room at least listening. I mean really, if you can spin up packages for Fedora without any mods to any other packages, then someone from debian proper should be able to re-engineer the packaging and get the equivalent up and running.
My offer still stands, I'll do the package reviews (when I'm actually on the grid and not at the arse end of the earth) for any serious Unity dep chain package submission into the fedora packaging process. But I'd really like to see a plan on how this codebase is going to be maintained via some upstream group now that Canonical looks to be moving on. Hence my suggestion to talk to other distros about their interest in keeping this alive.