What do you mean? The Islamists were banished to Idlib, so there was peace in the areas controlled by the SAA for several years. There was corruption, but that's definitely better than head chopping
I think "banished" is not the best choice of words. HTS captured Idlib. At first, it was another version of the Taliban in Afghanistan. That went about as well as you'd expect. I imagine that HTS did not need dissent in Idlib as they needed a base to continue their attacks in Syria. So yes, Idlib and areas controlled by Kurds were not as brutal as the rest of Syria.
It's too early to say what the future holds for Syria. It could become separate states, ruled by various factions. It could be a total disaster like Afghanistan. Turkey wants to reconstitute the Ottoman empire. No doubt he is inspired by Putin. Jolani may be sincere, a Muslim version of Nelson Mandela. Even if he is, there is no guarantee that he will be able to please both conservatives and more liberal Syrians. He's already being criticised by both sides. Usually, that means people are doing the right thing. I'd not be investing in Syria right now.