I am highly interested in this, especially if it works well with Time Machine to do backups over the network. I've got a fully 10GbE + WiFi 7 network w/ Ubiquiti gear already, would love to ditch my janky DIY NAS setup for something that is integrated with the rest and could potentially give me a better backup setup for my photography as well as enough storage to act as a media server.
Wireless Time Machine backup works until one day, Time Machine decides to shit the bed. Do not trust it. Invest in a different backup solution if your data is at all important to you. Something like Arq or Backblaze or tarsnap.
I have a UNAS-Pro, which runs the same Unifi Drive software as this, and it works great for Time Machine backups. Dead simple.
I also have tons of other Ubiquiti gear, and honestly there's not a ton of synergy between the NAS and everything else. It's a great NAS though. And also, it's only a NAS. It's not an application server like a Synology NAS.