I haven't completely made up my mind yet, but I took a box of new B17's out for a spin last night. Took down 4 hangars with 4 drops, and put 6 fighters out of their misery. (PS..I could just smack the tard(s) who shot me down on final to landing...low, slow, gear and flaps down...tough target, chumps! )
Gun shake did not pose much of a problem, nor make the screen unusable. In fact, it made gunning just a hair more challenging, which should comfort those who think everything is porked.
It may get irritating later, but for now I have no complaints with the effect.
I have to agree, though, that the shake effect seems out of place in a coax or hull mount MG.
PS..Sorry. I just realized that I contributed to hijacking this thread away from stall chatter, and on to the headshake gun effect! Whoops...