I’m certainly dreaming (New Vegas is one of my favorite games ever and I feel it deserves justice + I would love to play all of that cut content ) but I guess that would be the best approach for MS regarding the Fallout IP at the moment (and I don’t think they want to sit on the IP for another 7 or 8 years).
So, here’s a realistic alternative to Fallout 5 and New Vegas 2 as they probably aren’t happening anytime soon: