1, you can flank the the wall as drg/mnk, cant get behind but can flank.
2. 2 geared bards dont see bee's on wall, so 2brd even if nerfed be fine

also, my guess on what we will see is a penalty to dmg or acc when moving. ever try to fire a bow running? its not easy. expect a 20% drop in acc when moving, thus stand still and fight (like we do 90% of the time or more) and there is no change in brd's DPS, but on fights where we get a big advantage as AOE mechanics do not affect us we now have a penalty which results in lost DPS when moving. If you ever played FFXI you may remember how easy mode things like Kirin that were 100% kited when you had a bunch of rng running after it taking advantage of the same mechanic we do now with BRD, what happened? acc penalty when moving or mob is moving (also dmg penalty for being too far or too close, but dont expect that here).