I can only encourage filing the IAs when something like this happens, I know you say it won't help, but it will and it does. Filing IAs is apart of the coaching that needs to be done within the factions.
I personally haven't seen such behavior, but I'm sure it happens sometimes and that is where the PD or FD needs to be made aware via the external means that we have in place for exactly these matters.
Regarding the taking of license, yes maybe it shouldn't have been done while the criminal was on the ground and such, but police do have the authority to do so if it's a repeat offender and they have dealt with said person over and over again. Try flipping it around for a sec, and see it from a POs perspective, how great is the RP if the same person just do the same shit over and over again just to get his own little fun of messing with the PD, that same person takes all the RP out of other people that wish to interact with the police aswell.
Just my thoughts.