Pretty much every class has a stun, interrupt, or blanket silence at this point which (in the context of BGs) are stacked, spammed, and used indiscriminately to more or less lock down whichever side has fewer players.
It'd be nice if perhaps some of the instant cast spells and CC were removed rather than adding more as you seem to do every expansion.
It'd also be nice if there were some recognition that in a large scale PvP environment that there is a point, numbers wise, that ranged DPS begins to massively outscale melee in group encounters. What I mean is that a Warrior might beat a Warlock 1v1, but 8 Warlocks would annihilate 8 Warriors easily since melee is infinitely more susceptible to AoE CC and has more difficulty in assisting on targets.
Since you guys have more or less said that you'll be balancing around BG play from here on out it'd be nice if you'd deign to share some of your ideas on what actually constitutes fun and balanced play in BGs. If it's a ***#fest of instant spammed abilities, prot classes sitting on top of flags spamming AoE, and the absolute domination of numbers then I fear we are in for a disappointing expansion.