I think the rule of warning shots should be
"Warning shots are required for non rebelling actions"
example = falling of big cage, not crouching in the beginning of the round, not crouch walking.
If they fall off big cage running towards a CT, kill him, but if he immediately tries to get back on, that's a warning shot.
Honestly, do you want to die for running for a split second when the cells open, and then crouching because the orders weren't clear?
I play both T and CT and I think the warning shot rule is fine, just needs to be reworded.
Keep it.