To be honest, we had many issues with v11. Everytime we installed web server or database it would fail. Also backups were issue. And many other things.
I am really happy with v12. Except few issues here and there, everything runs fine and support is responding quickly and helps a ton. Currently we k ow of 1 bug with backups and memory, which should be fixed in near future.
For me, I would appreciate more API endpoints and more information about status of things (e.g. that backup is being created).
That said, I need to point out that we've build our own admin panel on top of enhance since we missed package upgrades (we have package for every hosting plan), bunny dns, export backups, better impersonation,real time per webapp RAM and CPU monitoring and couple others. And works like a charm. We switched from RunCloud and I do not regret it.