So NYC will have even more clout in the legislature. This will cause an even greater hemorrhage as left wing policies destroy the economy there. What will be left upstate will be a larger version of Vermont.
Already happening. The RINOs (who barely control the Senate) have done their best to preserve as many legislative seats as possible upstate. Once folks like Dean Skelos and Frank Padavan retire, however, their seats (Nassau and Queens, respectively) will go over to the Dem side, ensuring Dem dominance for the coming decades in both houses of the state legislature.
What will be left upstate will be a larger version of Vermont.
How prescient you are! Already happening in much of the Catskills (see Woodstock, Kingston, etc.) and even the Ithaca virus is spreading to other towns in the finger lakes.