Time for Mossad to ship some Stingers to the rebels, circa Afghan/Russian conflict. Have some techno-nerds upgrade them, give them to the MB idiots, and wish them good luck. Do NOT give them state-of-the-art anything.
Do you really think having a super-sized Hamas/Hezbollah (i.e. a Muslim Brotherhood Syrian government) with 10 times Israel's land area and 3 times Israel's population, armed with MiG's and SAM's on Israel's borders is a good thing? Syria's Alawite regime has been funneling Iranian supplies to Hezbollah in exchange for Iranian aid to Syria. A Muslim Brotherhood-run Syria will devote the entire resources of the state towards killing as many Israelis as they can. The Alawites have traditionally been hostile towards Israel because they were using Arab Nationalism as a shield against Sunni Arab resentment at being ruled by Alawites. The sectarian war against Sunnis has basically destroyed the whole idea of Arab Nationalism in Syria. It's now everybody in Syria against the Sunni Arabs, who are now being financed by the Gulf's Sunni Arabs - the same people who are keeping Hamas alive and financing al Qaeda. Why would Israel shun this opportunity to reach an unspoken understanding with the Alawites - the same kind of understanding it reached with Jordan's King Hussein after the 1967 war? Especially with Egypt about to hand power over to a Muslim Brotherhood government that is about to march against Israel? If Syria's falls to the Ikhwan, Jordan won't be far behind, given its long and porous border with Syria.