I think the problem was with greater dispersion on the buff guns combined with having multiple guns slaved to a single gunner, you ended up with a HUGE cone of fire. I may be mistaken, but I think HT turned the dispersion down (maybe off?) on the buff guns to prevent them from being too uber. Because all the buff guns converge on a single location, if you put in proper dispersion, you end up with with a very large cone of fire. As it is now, the cone of deadly fire is much smaller, BUT if they hit you, they all hit and you die.
Problems with the current setup IMO are that the guns will often fire through the fuselage. That really sucks. That and the gun positions being really tough to kill.
That said... I'm sure HTC will balance this so it's reasonable. The key will be how all the guns are slaved and if they keep them from firing through the fuselage combined with friendly fire within the formation.
Either way, it's going to be VERY interesting!