[choctaw111]

Gun recoil is modeled in Il2. As already stated, if you loose one wing cannon, your aircraft will slip to that side when firing.
Another and even better test is to land your plane, shut down the engine, and fire your guns. You will start to roll backwards. Of course this is more pronounced on the larger guns.
I would think that any and all effects present in Il2 (and many new ones) will be improved and implemented in SoW.

Edit...Sorry robtek. I see you already mentioned this.