Such is impossible in Syria.
Why? There're plenty of examples in Syria, as in other countries with a variety of minorities (virtually every one) that don't suffer from civil war.
Diversity is actually a part of Syria´s pride and identity. Whether you are Jew, Muslim, Christian, socialist or right-winger, there is no difference before the law. "Oppressed" Sunnis can even apply Sharia law instead of regular law in a suitcase.
Civil War is also not the correct description. There is no Alawite vs Sunni. It is an attempted Islamist takeover, jihad.