As cool as this type of feature would be, it has a low possibility of ever happening because it requires too much modification of a base feature. There's limits to how much of a modification we would ever request and this goes way beyond it.
We can modify the amount of people in pvp, the level bracket, the points gained, the length of the matches - things like that. But to add a whole separate area where you can observe and whatnot, just wouldn't be plausible.
It DOES sound cool, but just wouldn't happen.
If it does randomly show up in a future patch, then awesomesauce, though.