What more do you honestly want? Doms, Corrs, Stalkers, Blasters, Defenders, a few controllers all have very strong builds in PvP from 1 v 1's to 8 v 8's. As the Banana man posted above, Brutes and Tanks fill a role, it isn't an exciting one but they still have a place. Veats still mess with stalkers and have some disruption with web nades. Masterminds will always be annoying for people who fight into them. People still enjoy fightclub where 2 melee slug it out so scrappers, brutes and tanks have their own little world of PvP.
What is left? Khelds not really bringing much to PvP?
where can I find some of these build about what makes a good dom, mastermind, corr, defender for pvp? I never really got much into it and still am clueless what to build for with any of these. I used to play around with my Trick arrows arrows defender in RV and had fun especially with a team.