PvP rooms where you can queue 1v1 to 5v5 party Rank(MMR) or Normal mode. The case with RBF is that which team got the most range character camping outside the spawn point wins.

I was thinking of the same thing. Like having a whole tab of lobbies you can enter just for the fun of PvP. It would be nice to have the idea of creating customizable lobbies, setting the playing field, and just play with friends with it