There's casual and rated PvP. Both arena and RBGs, being rated, are both team-based aspects of PvP. Stuff you can't do without an organized group. However, back in Vanilla, the endgame was the Rank 1-14 system.
My question is, would you want a solo-based progression aspect added into the game for PvP, to coexist alongside the other 2? I've personally gotten 2.6k and x2 Gladiator in arena, but I do not enjoy it much at all, I think the only reason I ever got that high was to be in the 'high rated cliques'. These days I like to just que for the odd BG and some world PvP.
Do you agree that there should be some kind of progression system added for solo PvPers?