I have seen couple of proper trials, the thing with those is that they are a such a pain in the ass to try to organize. You need the magistrate, HoS, people involved in the case, detective to present evidence, lawyer. If there is a situation when there for example is a traitor that has been caught and is about to be trialed, it is almost quaranteed that other traitors are raising hell somewhere else. Trials are a hassle. And also, trials are reserved for people who have committed capital crimes.
If you are being perma'd or executed for legit no reason and trying to sort it out IC is not working, you can always Ahelp it.