If you play Rebels and you see an ISD I your first priority should be to stay out of its front arc and out of close range. This didn't change and the Rebel ships have the means to manage this (maybe the AFMK2 is an exception but that shouldn't really get into blue range either).
An AvengerBT won't have Gunnery Team or Ordnance Experts. Its side arc is a fairly "safe" place to be, more so than it would be if it has either of those cards.
Sure, it's new, strange to play against, but far from OP. It just makes avoiding the front arc even more significant, that's all. Just because a combo makes a ship more potent I don't see any reason to nerf it.