What rights did the Colonial leaders feel were being restricted by the British Monarchy?
Read the Declaration of Independence and you will see for yourself. Among them though, the most important ones were the right to representation in the legislature, the right to give consent to taxation, the right to property which was threatened by the non-consentual taxes, and the right to trial by jury. Michael Montagne
Colonial leaders, being from Britain themselves, were both against and for war against the British. The British was the premier superpower nation at the time. With a superior navy and army, there was no one that had the guts to oppose the Brits. But the colonial leaders knew that unless a war was to be fought, there was no chance at secession from the British empire.