The lack of stability is actually quite attractive to me. In a scientific environment we're normally running fairly new, often unstable code, and we often hit problems because of using older versions of libraries / packages / compilers, so somthing which stays a bit more current would be good and we can deal with breakage if it happens. The trouble is the management systems around HPC assume you're working on enterprise systems, which isn't really true in our case.
I've looked at things like OpenHPC but they're still on RHEL8 (RHEL9 is in testing but not released yet), and even lower level tools like warewulf is still only supporting RHEL8 at the moment which is getting too old for me to want to build a new system from it.
I've looked at more generic tools like Ansible and Chef / Puppet but before I go down that rabbit hole I'd like a sanity check that there isn't something more suited that I'm missing.