Grats on your Team reaching 70.

I would add a 5th if you can.

hunter
priest
shammy
druid
Din
I run 4 hunters and holy priest. they are only 63 and can clear ramparts. \

BM and trinket is your answer to aoe feart along with traps.

BM pets can own any cloth leather class and most of time solo them (5 pets are soo fun)

I do not have as many problems with rogues as BM. all 5 traps on rogues are so fun

If the grp is geared and played correctly you can do very well in pvp and pve.