Good luck with that. Unless you have a ground war centered around a spawn camp I doubt the "GVers" would show.
Spawn shoot die, spawn shoot die...out of lives, frame over,
That was basically what we just did. GVer's, contrary to popular belief, like tactics. When you have one or two points into a single target, people know where you are going, so it will eventually turn into a slug fest. If there were multiple targets with varying entry routes and tactics played a much much larger part, you'll see many GVers want to participate.
The idea wasn't bad, it was the numbers when broken down and the forced participation in GV's that gave this time a sour taste. But there in lies the problem... Unless there are enough people, we can never try to achieve the Golden Age of GV's in Scenarios.