They don't seem to be able to compete in meta atm. Hopefully the next expansion adds some nice support palis or something.
I mean for meta, bgs seem to be a mixed theme. But I suppose if you wanted to stick with one id suggest dwarves. You can even make a barbarian bg for pretty cheap.
dwarves with brewmasters and black label brew then equip everyone with blb snd add a catapult for that "get in yo face" motion.
