It would make sense to keep br 1 and 2 together, br 3 and 4 get their own quene for mid/late war historically accurate. Put br 5 in its own fantasy land with experimental weapons and top tier gear
Something needs to change because running tier 1 3 or 4 gear is pointless you're almost always at some form of a disadvantage and I love most of the 3 and 4 gear