Okay, earlier they were complaining about harmless Paarthurnax when Skyrim was still under attack, but now I've saved the world and that's still the ONLY thing the Blades can think about! Those fools! If I kill Paarthurnax, what will all the dragons do without a healthy-minded leader to follow? Basically, they're asking me to wreck havoc back on Skyrim. You know what? You know what I said? FUS ROH DAH! Have a nice time rolling down the mountain side! Watch out for trees! http://www.youtube.com/watch?v=g7uCL-AD1-8
P.S. Also, completing the main quest while playing as a mage with less then 140 health on Master is possible. Just don't get hit...