*When* fire gets rolling - it's so much fun. You're basically launching an inferno of pain.
I'm honestly not sure what could possible fix fire at lower gear without either being less effective at higher gear (As that just seems weird), but doesn't cause the massive disparity either.
They really need to move it from crit somehow.
Sounds like a really fun idea. Its they did this but decreased damage (if need be) to even out our dps, it could actually make the spec lot more fun.