“red states subsidizing blue states”
That is a misconception.
Far and away the blue states subsidize the red states, through increased Federal Income taxes, per capita AND in total.
Blue states pay in more than they receive back, and usually, red states pay in less than what they receive.
Generally blue states subsidize red states. Per capita and in total.
I agree with you on the spending side. Oftentimes, red states ARE subsidized by blue states. My solution for that would be to use block grants, where appropriate, proportional in each state to to its number of members in the electoral college. That would preserve both equity and proportionality among states and hopefully eliminate some of the cross-subsidies.