Another issue that I can see is on applying fixes. You will have to manually pull and rebuild from source on the latest changes. Then manually apply the binaries on the servers.
A belated welcome to the MongoDB Community @psyntium !
Unsupported platforms and server edition combinations do not have official binary packages or build/testing infrastructure. You can still build from source and run server tests to test your build environment.
You can always submit bug reports in the SERVER project at jira.mongodb.org, but there will be limited assistance for platform-specific issues because test environments are less readily available.