Personally, I think V had a badly flawed premise from the get-go.
Any civilization technologically sophisticated enough to put its entire population aboard giant starships and move them to another planet wouldn't need to do the things that the V Aliens do to get what they want.
Water: Easier to get out of the icy comets.
Minerals: Easier to get out of the asteroids.
Living space: Easier to build more ships.
Meat: Alien biochemistry. We're more likely to be poison to them.
OTOH, IIRC, Larry Niven and others once wrote a treatment for V that scrapped a lot of that stuff, and suggested that the real reason that the V aliens wanted Earth was that they had a prior claim to it... as the descendants of a race of intelligent dinosaurs who had left Earth eons before (Although now that would sound like a recycled Voyager plotline...).