I don't think he expected anything to come of the criminal complaint. He is able to use it as a talking point, to try to show how serious he is about fighting back against defamation, and possibly to intimidate the targets.
Remember that the statute of limitations on this step was three months. He had to file soon or time would have run out, and he didn't want to be seen as talking about taking action and then admitting that he did nothing. But now he has the civil suits he can file, and the statute of limitations on them is three years. So he can drag that out a long time, and if anyone asks about it, he can point out that there is plenty of time to do it and that his team of intrepid legal minds is feverishly at work finding evidence and laying out a case.
He may be hoping that the threat of civil litigation will be effective by itself, or at least provide him with a quick and easy reply if anyone asks about it in the future. It's being worked on, he will say, and remind his critics that he's just waiting for the right moment to strike. He'll get a pat on the back from his dwindling supporters and feel good about himself, until the next critical tweet sets him on edge again.
So the question becomes, will he file a civil suit before 2025? Or is he hoping everyone forgets about it by then? Maybe he feels that he can recover his lost empire in the meantime, if he can just get everyone to forget what happened and intimidate other exJWs into silence. So far, he's off to a rough start.