Melee Positional Requirements
Back in the good old days casters were interrupted from every hit, bards and machinists couldn't do max damage unless they stayed at a magical range, and melee dps couldn't get positional bonuses without being...well..in position. This was balanced well.
Let's look at it today:
SE added a 15% health threshold for casters, essentially allowing them to freecast.
SE essentially removed the ranged penalty from BRD/MCH, allowing them to do max damage at all times.
SE removed positional requirements for melee DPS, allowing them to also do maximum DPS...Oh, wait, no they didn't.
How about you make it so that positionals are effective in PvP as long as you aren't hitting the target from the front? You lightened all other class' penalties so far, but ignored melee. Our turn.