We don't have to make people spend 72 hours IG while in prison, we can say that A person got sentenced 7 days which he can appeal, parole out or wait it out (doesn't have to be ig, time will still decrease) maybe make them roleplay %5 of the prison sentence IG for the sake of prison rp and prison factions, people underestimate the fact that most of the criminal underworld of California have ties to prison one way or another and prison roleplay is not boring, give it a shot.
And doing this will allow the server to have an active court system with active DoJ and lawyers, what did DoJ in old LS-RP do other than handling a few extraordinary cases for certain faction leaders or key members of factions? This will allow people to actively roleplay as lawyers, attorneys, judges etcetra.
This will also add a bit of spice to LS-PD and SD for the fact that everything revolves around a court system that comes with lenghty prison sentences. PD and SD detectives will have to have constant communications with attorneys for search warrants, arrest warrants and the list goes on.
I don't see any negative effect other than "prison rp is boring" (which I don't agree). If you're roleplaying a criminal, prison will be a part of your life and it is the best place to build networks. Instead of 1v1 fights turning into a murder every time when one of the combatants are armed, this will force criminals to be smarter. You want to take out someone? You better plan it beforehand.
This system allows a lot of things, going as far as from RICO cases to money laundering and IRS. Organized crime groups, gangs, police, they will all need to smarten up. DoJ will be active every day, people who'd like to roleplay as lawyers and such will have a chance to actively roleplay on the contrary to old LS-RP, if we want to keep it the same way it was like back in the day, it's all good, if seeing shoot-outs everywhere wherever you drive during peak hours is what you want with inactive DoJ, inactive prison is what you want to see.
I belive that the roleplay has evolved to a point where it is more serious, if we keep things the same, it simply won't work out, we all had our fair share of shoot-outs with no consequences, if hard-roleplay is what we're seeking, this is the path we should take.