Well, even when I played BRD in ARR I liked to stand still unless I had to deal with mechanics, I can still dodge out of AoEs unless the marker comes right as I start a cast so any non-mechanics movement is really just wasted movement or "lookit me, I can run around anywhere!" kinda deal, if BRD/MCH had positionals AND castbars, I'd see the problem, but we don't so it's really not that bad.

Also, pretty much every DPS (except MNK) plays completely different at 60 than they did at 50, SMN now has to deal with 2 sets of stacks, plus buffs, DRG rotation got an RNG finisher to keep up a buff and got their positionals back, BLM has to deal with enochian and AoE-magnet lines. Not to mention both BRD and MCH have enough insta-cast oGCDs that you can use while moving (in most of Savage, they're up by the time I need to dodge anything except with Vortexer), not to mention we can still move when the cast bar is at around 70% without cancelling.