Yes, on certain maps printing them allows a player to very quickly pressure a front from the comm-position. The bulkheads themselves are tanky, out-range everything and are hard to raid - let alone when backed by other units or a comm.
By themselves the buffs were on the edge, but printing mitigates its main weakness: the unit is only effective in a 'deployment' zone. When it's on the move it's slow, vulnerable; timing might be off, distance matters, etc.
And yes, it is on specific maps: the ones where commonly a single long front appears. Yes there are likely exceptions to what I just said.
I don't have input on nerfs, I think many are possible.