They planned to invade upper New York by way of Lake Champlain and to proceed down the Hudson River to New York City.
A stronger central government. This is because of the inherent weaknesses that resulted from the lack of a strong central government that could protect the people's lives and property. The federal government did not have the authority to deal with the problems that spread across multiple states an example being Shay's rebellion which exposed the weaknesses of the prevailing system.
Many more people would have lived and it would not be in the ocean today.
It has been proven that in the eyes of the british, the american colonies only existed to benefit britain economically.
I hope my straight forward explanation can answer your question :)
