Or move Incite out of the Prot tree completely as it doesn't seem to fit with the others.
But really - the answer being an ability you can use once every 6 seconds? Revenge will always be behind. And it's not like you're trading heroic strike for revenge, even a buffed revenge you're trading for a devastate/shockwave/(rend/tc). So to make up for the difference you'd have to buff revenge out the wazzo to the point it's the go to ability in order to replace heroic strike's damage for balancing purpsoes.
Readjusting damage distribution for prot warriors is going to take far more than just buffing revenge. And nerfing incite doesn't help, then you're just further gimping DPS specs.
Never fear though - Blizzard seems to already be on track to fix it. Part of the active tanking ability usage they've talked about is throttling rage - which is the reason why HS is so high right now, rage is basically inifinte. In an active tanking world where you have to choose between DPS and survability, a world we don't live in right now, natural usage will favor less HS.