Apparently, you just have to dance, sway, slide, to survive the great war.
I really think spamming the A+D should not go without penalty/consequence.
There's a reason why they put the fatigue effect on teabagging.
Same thing with the crouch/slide killing. It's really easy to just press C while holding the left mouse button, then press shift to run away like nothing fancy (which required a lot of stamina in real life) happened.
IMO, the AD could really use the fatigue effect, and the crouch/slide should have longer delay before being able to run again.