If one thing hasn't suffered because of the patch, it's PVP. Even though the Arena system has been
buggy nonexistent so far, the regular battlegrounds are getting plenty of playtime as people start to grind for the new Honor Points, learn their new specs, and generally get back into the swing of a World of Warcraft that's changed a lot. As Relmstein says, the patch has breathed new life into WoW PVP-- people who never played before are interested in playing, and people who've played to no end are coming back to try the new talents and learn new tactics.
All this activity hopefully will bring with it a little bit of strategy. Relm says he's seen zerging in WSG and little node defense in AB-- I'll agree on that last one (get three flags and hold them, guys), and add that AV needs help as well. In fact, AV needs a lot of help. With all the work Blizzard has done on the off-the-field of battlegrounds, I'd now appreciate seeing a little on-the-field work. It's well known that AV, as it's set up, is unbalanced towards the Alliance side. As much as I'd like to see that fixed before the expansion hits, I doubt it'll happen, and Horde will continue to get trampled on that darned bridge.
Still, strategy problems aside, I have to agree that while raiding has taken a beating under this patch (with new specs and mod changes causing players to learn their roles all over again), PVP is still a pleasure most of the time. In fact, if you'll excuse me, someone just yelled INC BS-- looks like I'm needed on defense.