Best pvp experience - BGs and Open world?

Hi,
I’m looking for a particular pvp experience where my goal is to do BGs and then roam the open world in between being a menace.

I plan to play rogue on a pvp server.

With these two criteria I have found Classic Cata to be the best bet. So if I want to gear up doing only pvp, will I be able to do this here? And still have a populated world to explore and hunt other players.

I also thought it might be good to join a server dominated by the other faction. Sure, levelling will be though, maybe even horrible. But at higher levels I will be able to actually find other players to challenge. In retail I find war mode to be empty, and I guess Classic Era even more so?

the servers are either 99% horde or 99% alliance, it’s not like you have a balanced choice
the AH isn’t cross-faction so it’s a terrible idea to be in the 1%, just forget world pvp

yeap, but you’ll probably end up doing some pve too because you can convert valor points to conquest

I ran into quite a few UD rogues while levelling on Firemaw, it should be easy to level horde there and gank the occasional leveller, there used to even be a horde guild for that.
Zero Tolerance! That’s what their name was. Havent seen them in a long time.