Removed, nah, but i would make changes.
I agree with this line of reasoning. RNG is a core CoH thing, because it introduces new things to react to. The issue comes in when there's no chance to react to the random event. At least with a main gun crit, it has a chance to happen instead of death (...right?)
Something like the "turret ring locked" critical would mean that the unit could keep fighting, but gain a new exploitable weakness to flanking.
Another example of this idea would be a blind, which can be countered by having another unit present.
Counterplay is key.
And of course, statistically, more subtle and numerous RNG events are more likely to be fair.