I've played both sides recently and this seems like a fair suggestion.
not really cop side is always outnumbered most newbies are always in law side
It's only just fair to disable the MPCC while law is already cracking, I can imagine how hard it would be for criminals to make money and resources while cops are in such high numbers and being aided by features like MPCC on top of that. Voting positive for the sake of fairness, however, I hope this does not include removing cop's ability to spawn at their nearby houses because we pay huge amounts for those.
As I said, one possibility would be that you can only spawn MPCC in Police Departments and Law Farm. What if you could also spawn MPCC in official Law Group Bases?That would give the criminals time until cops arrives with the MPCC, so they have enough time to arrive and gather, It's just an idea.
I wouldn't prefer that, because imagine the AR is at DS, BB, IS, PCB, FS, LSA, CPD, LSO where there are no PD or law bases nearby and criminals are cracking, I would have to drive my MPCC all the way from the spawning location to the AR and by that time a large portion of the total AR time would have passed. I think disabling MPCC near AR while criminals are low in numbers is the more appropriate solution.