+Major support
As former Shock Commander, this is what I've been hearing shock say they want for quite a while now, as it would make a lot of sense in both a roleplay and functionality sense. Being able to set different times for arrested players would allow smaller crimes like trespassing actually have a difference in punishment than murder or treason (other than bail price). I personally think this would be a great addition to the server, from the arrests side of things.
As Cinder mentioned above, it would be best if some sort of GUI appeared after arresting someone, so that you wouldn't have to run to the holding cell (or even just the Brig, as a holding cell would really only be for show), after arresting someone. This would be great to combat accidental false arrests, and would mix really well with the new AOS datapad system.
I think this could really benefit the battalions that do have arrest batons, and as someone who spent so long using the current one, I think this would be a great addition to quality-of-life updates for the server.