It won’t be easy for Turkey to implement a Muslim brotherhood led Syrian vassal state. The two biggest obstacle to this is the Kurds and the jihadist militants who despise the Muslim Brotherhood ideology. If Turkey is smart and wants to manage chaos in Syria they would have to integrate remnants of the SAA with the Turkish SNA. They also would have to elements of HTS that Turkey can control be part of it. Obviously this will lead a split within the radicals that want to jihad like the Taliban in the 90s. Turkey would have to prop up this new Syrian army likely with help from Russia to crush the wahabbist militants. Turkey likely doesn’t want Russia to leave Syria. They will need to secure Syria. No nation on earth wants to neighbor a warlord failed state. It will come at a cost for Turkey because these irrational wahhabist like their Zionist cousins will launch terror attacks on civilians on the Turkish homeland. Ask Pakistan what it went through in the 2000s and 2010s.Saudi Arabia and Egypt must be very nervous right now .They hate that Muslim Brotherhood outfit .
The Syrian Kurds are an obstacle not only on the standpoint that they are allied with the PKK. They control 80% of Syria’s oil and natural gas facilities. Getting those on the hands of a Syrian Muslim brotherhood govt would be an economic boost. In all Turkey better have a good post Baathist Syria plan because things are very fragile. Syria could very well become a warlord failed state with ramifications for the entire regional and catastrophic for Turkish regional ambitions.