We have been running Orchestrator 2019 RU3, for about a year now, it is a stable product, with some powerful on prem default MS integration packs. The most used features I use would be Sharepoint 365, .net (Powershell) and Configuration Manager.
We have a pretty complex large environment, multi domain, managing 3000+ servers, and it seems to be working "ok" (there are gremlins) but they usually point back to our complex infra.
Yes the install is "rebranded" to 2019, still has lots of 2012 components (install path), and it runs in a 32bit Powershell mode, (workaround exists on this to force 64bit, just annoying to have to do for every script), but I agree the pace of development on this product is "Glacial" compared to Config Manager.
It is saving us money, managing our fleet on prem 24/7. To migrate to the cloud there are very different concepts to consider, to be cost effective. We are looking to starting a hybrid model to utilise some of the very powerful features (scale sets, excellent MS product integration (power automate) and reporting with PowerBI).
You can always download and pilot for free (is it 90days?), see what you think.
But as Stefan mention I am "hopeful" MS will put a bit of consolidated effort to develop some of the most demanded items (64bit PS), get rid of Silverlight and one of my favourites would be "design runbooks by code / Git integration".
Good Luck!