RNG based combat is not what makes CoH stand out.
Soft RNG based combat (mostly accuracy) totally does make the series stand out, but yeah not the extreme variants of RNG such as abandons, crashes or main gun crits.
Ideally I would personally change main gun crit into a penalty crit that only decreases accuracy/ROF/whatever rather than completely destroying the gun, so the vehicle still has a chance to defend itself.
At the moment we're looking at lowering the chance for main gun crits to 20% so that the crit won't happen in the most common engagements, i.e. 640hp mediums shooting at each other or being shot by ATGs, while still remaining for most heavier vehicles or when any vehicle is being engagement by different damage value weapons or had some unfinished repairs.
There is apparently also an issue with all PTRS rifles dealing twice the chance to score a main gun critical that is being looked into.