I think there will be more of the Syrian Opposition (at least the secularist wing) that will abandon the Turkish-Qatar-Saudi-Muslim Brotherhood alliance. Let us hope so: http://aranews.net/2016/10/hundreds-syrian-rebels-join-kurdish-arab-alliance-sdf/
Here is another reason why non-Kurdish Syrians are joining with their Kurdish Syrian compatriots: http://aranews.net/2016/10/liberated-isis-suppression-women-manbij-join-armed-forces-protect-city/
And here is some background on the SDF: https://en.wikipedia.org/wiki/Syrian_Democratic_Forces
