What are the current options? I've been looking but I haven't found any. I have a DS923+ and it works fine, but I can already see what you are talking about.
One of the things that sold me on the Ugreen was that it is basically just a garden-variety N100 box, upgradeable RAM, supports SATA and M.2, etc.
According to this installing your own OS doesn't invalidate the warranty so if I decide their software is lousy I can install Debian https://wiki.debian.org/InstallingDebianOn/Ugreen
One has no linux or windows video drivers (Intel’s fault — no transcoding), and caught fire (not intel’s fault).
The other was one of the ones where the clock signal is basically a doomsday countdown timer. I had to swap it out for a warranty board for some other reason.
So, there’s no way I’d consider an N100. Other options?