I think if they wanted the transport helos to be transport helos, they should have made them the equivalent to Little Birds. (AH-6, UH-6, etc.) As it is now, it is a huge, flying coffin. As of 1.12, the guns on the Blackhawk were good and very usable. Now, the Blackhawk is hardly worth using, unless you want a quick death.
What they should have done is beefed up the guns on the MEC and PLA transport choppers to bring them in line with the Blackhawk. The Blackhawk is a flying gun platform more than it is a transport chopper, and they gutted that part of it. Now, it is more or less useless.
I say bring the guns back to the Blackhawk, and beef up the other transport choppers. With the reduced hitpoints 1.2 brought to helicopters, bringing them down is not difficult, especially if they try to stick around and kill people. I think with 1.2 hitpoints and 1.12 guns, the Blackhawk is balanced just fine. It's supposed to be good, right now, it just sucks.