The anti-federalist were greatly concerned that the proposed constitution increased the powers of the central government and lacked a bill of rights. why would these specific issues have been important to them?

The main reason why The Anti-Federalists were so concerned about this was that they had just fought a war to remove themselves from tyranny, so they were extra sensitive. 

The anti federalist believe that if the central government is given too much power, the country would be no different to the situation when we're colonized by the British Government, so they want to allocate the power to the people.

Refrain from making jokes. this app is meant to others.kindest regards, -bella