Debian stable:
- Works on all of my devices, none of which are newer than 2019
- Compatibility with all of the software that I use day to day
- I like my system set up in a very particular way and the stability makes upkeep simple
- I was a holdout on older Windows versions before I moved to Linux, so getting new features at all is already exciting
It’s certainly doable and something like that was my setup for a few years. There isn’t much in the way of distros or software packages that provide such a ‘personal multiseat’ configuration out of the box.
I wanted bare metal GUI access, so instead of using Proxmox, I went about configuring Debian to the task. This might not directly answer any questions, but here's an idea of what it looked like.
Hardware
Boot disk
Virtual machines / (RAM allotment)
I’d suggest starting with anything graphically intensive running on bare metal and setting up a VM with virt-manager / Virtualbox / etc. for the NAS part. Get a couple of disks specifically to pass through to the NAS VM, forward its ports to LAN, and connect to them on the host as you would any other machine. For a desk further away, you may be able to get away with a KVM extender, but I can’t say I’ve any experience with them.
If you try to virtualize everything like I did, there’s a couple of hurdles:
Go for AMD if you can, but NVIDIA hasn’t given me much trouble either. Make sure to install the driver from your distro’s repo, not NVIDIA’s website. IMO, this is less of an issue if you decide to pass through the GPU to a VM since any NVIDIA driver shenanigans will be contained to the VM.