Camera Lock on Target
I sort of agree with this one. I’m not entirely sure whether it’d be considered game-breaking or not depending on how it’s implemented, but with the Thief’s dual-dagger combo skill (forget what it’s called at the moment), it would be insanely helpful with keeping the camera on-target while still moving and dodging after that flip. Also would be insanely helpful in WvW when your target leaps in some random direction, causing you to lose sight of him (since the “this is who you’re targeting” highlight isn’t too clear), and you’re just like “son of a sandwich, where did he go!?”
And on top of all that, I could orient both my hands to keyboard functions and have WAY better access to skills and activations. It’d be something to get used to, but I would love having that feature around.