Anything that doesn't change gameplay is a great idea to monetize, however I don't know how they could possible transfer from the current system successfully
Units should lose supression quickly if they aren't being fired upon by the source. What I mean is if you smoke a mg42 and your rifles are supressed, they should become unsupressed really quickly since the hmg can't fire at them.
It's really stupid to have units that are crawling when nothing is shooting at them.
For pack/isg it would mean that units would become supressed/pinned for like 1 or 2 seconds and then got back up, this would also apply to CAS AI strafe which could make it less bullpudding.
To compensate units should be pinned way faster by everything.
I think it's incredibly stupid that units can be supressed for ages even though flak or something is already dead. It should be more dynamic.
What's bad about this is that in real life, infantry sections used light mortars to clear garrisons. It was a very deadly tool that's mysteriously absent.