I don't have a 'vision', God introduced Islam us to us and provided us with Prophet Mohammed who taught us how to obey the Lord and make Islam a lifestyle for us. Without the Lord and his messenger, we wouldn't know the truth or be guided to it. You cannot be guided to the truth by reading the Quran or hadeeths like a manual. You have to be guided to them by God by taking steps towards him. He will then grant you the guidance. ISIS reads Quran and hadeeths like an instruction manual and think everything will fall in place if you follow instructions. It does not work like this.
There are many Muslims sects, schools of thought within Muslim world and this includes Sunni Muslim world as well. It's entirely possible for all tribes and sects to live under Islamic state without trouble. Muslims will have different approaches to worshiping God and different judgements on certain matters. That will never change. The problem is with people(of any sect) who have aims that don't serve God. They naturally will cause division because God told humans you will not prevail nor be guided by your own worldy ideologies and aims. Especially if you are Muslim, as the Prophet made prayers that God never allow us to go astray and God accepted his prayer so God will always push us back into place through various means.
Well then what you are describing is basically pre-war Syria