in my opinion, Arturia (Devs and Testers) gave the New VS-V a lot of love
it's very well designed and has all the latest Arturia treatments
the key thing though (for a user to decide) is if they like the Sound (and are ok with the Limits) of what the VS-V can sonically do.
from a sound generation point of view, there are limitations (in my personal opinion) based on the limits of the (orig) VS-V architecture, technology and purpose.
It's kinda of like a Yamaha DX-7 in the "digitalness" of what it can do, and is not an analogue sounding device.
But, the VS-V sounds can be added to other Synths or used for their clear, distinct sound where needed.
I might do the upgrade, and am in "final decision mode" on: if I would ever really use the VS-V in a track/song.
But, it's clear that Arturia did develop this new (from scratch) and they did an excellent job in my opinion