So. Anyone got any good ideas as to how we could make Vaishnavism into the dominant religion of the Indian subcontinent?
Personally I'm thinking that this could come about in one of those Islam-less worlds, if the polytheistic Turks were to advance into northern India (on the account that every sufficiently strong Central Asian power has done that) and take over the Gangetic Plain. Then they could pick up Vaishnavism as a convenient state cult; plus I think it might be easier for Turks to adapt than most other versions of Hinduism, though that's hard to really back up (it just seems close enough to Tengriism). Then again, it seems to have been more widespread in the south, and having it as the religion of foreign conquerors might not be the best way to cement it in the long-term amongst the general population (still doable, though). So maybe some great empire based in northern Deccan could've arisen at some point in the Middle Ages? Any thoughts?