OK, the Mesh explanation may be a possibility. That wouldn’t change, and in every other regard it also is the same as any other Roon Server. If it works, it works, and does what it needs to do. There are no additional features that it unlocks or anything.
I think it depends on what you are currently using for your Roon server. For instance, if it is a general use computer that you use for lots of other purposes, it might help to move your Roon server to an always on, dedicated Nucleus One, etc.
You don’t say where you’re running your Roon core, i.e. on a dedicated device, or on a system that you use for other things? One advantage of having the Roon core on a dedicated device is that it’s not affected by load on a shared system.
I’ve just bought a Nucleus One, because I want to move Roon to a dedicated device. Currently it’s running as software on my main Linux server, and suffers a bit when that is overloaded.
You could of course build your own dedicated PC, or a NUC, etc, whereas the Nucleus is designed to be an appliance…
[ah snap! Jim has just said the same, but I’ve typed it now ]