“Plus, supersonic cruise is going to require revolutionary engines, a lot of fuel, and some kind of strategy to deal with heat dissipation.”
Say hello to the SR-71.
SR leaked fuel from its tanks before hitting such high speeds the metal of the tanks expanded...sealing off the fuel tanks...IIRC.
P.S.....why BOOM supersonic? Can you imagine the cute headlines if one of those things blows up or crashes?