I will add that I use XCP-ng at home; but, also in an enterprise virtual environment (without professional support right now, as we don't need it for Xen). We also use the Enterprise XOA, and have even had great success with Backup-ng for specific VMs we can't backup with other solutions. My qualm is that I could absolutely use some of those Enterprise features at home; but, alas, the licensing is WAY beyond my personal budget. The subscription model is the only way to go in this industry, or the very similar perpetual license with a yearly support subscription (neither all that different from each other from a cost perspective) - you can't maintain a team and ongoing development with "one time fees" (look how this has actually harmed Plex due to way too many lifetime passes being sold).
That said, the reliability and stability of the XCP-ng\XOA solutions across the board is at least equivalent to native Xenserver (which isn't necessarily an insult or a compliment - any of us who have used XenServer long enough know that it can be incredibly easy and downright simple to manage, or it can turn into an absolute disaster real quick). We also run native XenServer, and some VMware and Hyper-V in our environment.
Do I have ideas of where I'd like to see XCP-ng go? Absolutely. I don't think it's time for me to be pushing those while the team fleshes out the product per their initial goals and desires, however. Do I have extremely diverse experience that could be invaluable to the team in developing new features and capabilities? I'm sure; but, I'm not a developer, I'm an administrator\engineer. I understand coding, and can often talk the talk; but, it's not my cup of tea, for sure - I'm not sure I'd know where to start to assist those endeavors beyond asking actually questions.
I do hope that the XCP team's recent progress towards becoming an independent product is a success - sooner rather than later. They already have some big companies betting on them. I could go on for quite a while on subjects like this - if XCP-ng has an open position that pays roughly $100K/year for someone in the top 5% of skill and talent in the global IT\IS field, let me know.