Why do enemies spray until they reload? That's not how soldiers, even conscripts, are trained. A weapon fired at full-auto would be impossible to handle and be accurate with... unless you wore a Nanosuit, that is. Suspension of disbelief aside, accurate full-auto by normal humans is kind of cheap and potentially infuriating.
That said, I really need to try this mod. Crysis 1, Warhead and 3 were the best ones, I think, but 2 had a charm of its own despite being clearly console-oriented.