You can already do this with VNC or Xpra (the latter is a screen/tmux for graphical applications).
Now, VNC might actually also work very well over WireGuard or SDN based on WireGuard. Since VNC was designed for LAN, in a time where LAN was the common use case.
For me, low latency is from the past. I always got either wired, Wi-Fi, LTE, or Starlink.