Perhaps the next season will be about Mars, Clovis Bray and the Exos. Which were probably made using Vex Tech. Because think about it. Clovis Bray had a strict rule that Vex tech was forbidden on Mars yet... Also, it was used to transfer Sagira's consciousness into our Ghost's shell so.. Anyway, Deep Stone Crypt?
Well my theory still stands The season pass will fallow the same path and continue the stories of the original DLCs. Starting off with curse of Osiris, then moving to warmind, then finally to Forsaken, which should then lead into a full priced expansions revolving around savathûne and breaking the curse once and for all