I'm not a theorycrafter, hardocre PvPer or else but I regularly did bg, and I did notice some problem since the High Isle patch.
Before, 1 or 2 bg out of 5 was unbalanced af. Sure this was frustrating but it let 4, 3 bg still enjoyable even when lost (or even 2 bg enjoyable in bad days).
Now, 5 bg out of 5 are garbage. Just sitting in the spawn base waiting for the faceroll group to win in 5 minutes. This is quite as bad as was levelling pvp on WoW 10 years ago, that means something.