Each of the classes still have different perks to them that sets up a foundation for their own gameplay. Ninjas have their mudras, DRGs get their timed jumps, as well as maintaing BotD. Monks still have a hhuge emphasize on maintaining full uptime for stacks. BLMs cycle between astral and umbral, and enochian adds on top of that since their IV spells also require astral/umbral respectively, while keeping their 2.0 in check because they can't switch astral/umbral with IV spells. SMN has always been DoT oriented and they get an extra layer of stack management that works in-tune with their aetherflow.
I'm digressing when I say this though, MCH and BRD's stance ability is functionally the exact, same ability. I feel this is where they dropped the ball when it came to diversifying ranged dps' gameplay. Both when you boil it down, comes to watching for skill procs, keeping their own buff refreshed and keeping DoTs up. Ammo doesn't add that much of a variety to MCH for aforementioned reasons, and BRD doesn't mesh well into WM because of their animation and their reactionary procs from traits.
