I take that as you not supporting to have a HD-video output on Neo900.
The idea with HDMI or VGA is obviously not about "laptop replacement" since a laptop per definitionem has its own built-in display, so why would it need a HDMI port?
The concept rather is about portable "CPU" unit that you can hook up to a stationary set of standard human interface devices like keyboard, mouse, monitor.
Neo900 has the additional benefit that it can get used as a palmtop when no such "workplace docking station" is available. However that's not meant to replace the docking station.

On a much more pragmatic aspect: we have no choice regarding device formfactor, see the fundamentals in post#1 etc about why and how this whole project came to life. If we could design our own case and formfactor, we would have started an entirely different project.