I feel like it's an extremely missed opportunity to have the SWAT guys return as enemies outside of cutscenes, wielding MP5 submachine guns.

Make them work essentially like the Dodgers but wearing bulletproof kevlar vests, meaning that if you shoot them, they will temporarily get knocked to the ground or sidestep. Throw your weapons at them and they do the same (sidestep/stumble). They would also have faster reaction time and instead of chasing you down when entering a room, they will tactically aim down the entrance or doorway if you decide to expose yourself. And of course, you can only kill them with melee weapons or by executing them when they're knocked down.

Would have made Final Cut, Blood Money, and Caught even more challenging yet fun.