I would absolutely love to battle FPV, think of how inportant camo would become?
As mentioned above, a battle field could be so much smaller, 'buildings' could be just flat facades, decorated on both sides creating two lanes without requiring much space.
I've been occasionally looking at the systems as they improve, the only thing that stops me is price, I'd need to buy 3. As far as getting a club to do it, it seems pretty hard to get a group together for a regular battle, I can't imagine having enough members outfitted with FPV.
It'd be a hysterical sight, the edge of a field lined with a bunch of guys sitting on chairs, staring off in space with headsets on yelling at each other while tanks roll around the field getting exercise.