The Kurds likely will have an autonomous territory, Rojava, which is about 1/4 of Syria east of the Euphrates River. They may give control of the Tabqa Dam and the oil fields east of Deir Ezzor. The dam is too complicated to manage and the oil fields need military protection that we cannot continue to provide and the Kurds won't be able to protect:
https://www.reuters.com/article/us-mideast-crisis-syria-northeast/kurdish-backed-body-aims-to-widen-authority-in-syrian-northeast-idUSKBN1K612B?feedType=RSS&feedName=worldNews&utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+Reuters%2FworldNews+%28Reuters+World+News%29
Syria is about to begin an offensive in NW Syria to reclaim the territories from rebels there and kick out Turkey. Syria is mopping up the rebel-held areas around the Golan Heights now.
The Iranians in Syria are the biggest problem. Israel won't stop until they are gone. Israel is about to start bombing the Iranian land bridge in Iraq. That's right, Israel will attack Iraq.
Iraq is rapidly losing control of its territory. The Province of Basra is seeking autonomy. They have not received the $45 billion in oil revenues they were promised:
http://wataniq.com/news?ID=31562
Iranians and their Iraqi militias occupy several former US bases in Iraq. ISIS continues to control western areas. The Kurds continue to push for full military autonomy and they'll get it.
It will probably take another year to firm up the Kurd defenses, kick out Iran and Turkey, fully exterminate ISIS and allow Assad to consolidate.
Obama started it.
He wanted the Muslm Brotherhood to take over the entire middle east.
But he was as incompetent at that as he was with everything else he touched. Thankfully.
The MB was too soft and fuzzy for some of the diaper-heads, so they spun off into ISIS.
Everything you stated is plausible.
But I can easily picture ISIS returning to Syria in the next year or so. Heck, they did the same thing in Iraq. Every time the Iraqis thought they had ISIL beaten, they’d come back around again.
Things will improve but many parts of Syria (including parts of Damascus and its suburbs) will never be totally safe as was the case before the war. There will be some kind of low intensity conflict existing there for quite some time. No amount of Russian money and weapons can totally suppress it.