See
https://groups.google.com/d/msg/soc.history.what-if/RQglKDaK4s0/LJH41-_Rof0J for John Kaminski's argument that Congress could have reached agreement with New York on the impost. I quote Calvin H. Johnson:
"Professor Kaminski argues that Congress should have accepted New York's
counter offer or continued conciliatory negotiations, as, for instance,
James Monroe recommended. 144 'Had Congress followed this advice,'
Kaminski says, 'its financial needs would have been met and no federal
convention would have been called to meet in Philadelphia in the Spring of
1787.'145 With the impost and sale of western land, the federal government
could have made the minimal payments on the war debts until imports grew
important enough to carry the debt comfortably. Kaminski believes that
confederation form of government would have been better for 1787 America
than was the strong national government the Constitution ordained. He
believes that Congress would have evolved into a Parliamentary form of
government with John Jay, as prime minister.146 The Founders would have
avoided an imperial President, modeled on the King."