This is a once in a lifetime thing... Forget how crazy the guy is, I think this has nothing to do with Felix. Just like test pilots, I think the line is pretty long to have the chance to do something so completely amazing.
I watched the better part of the entire broadcast and was just amazed at the entire process. The balloon completely filling up as the helium expanded was very cool to see. The unbelievable speed of the fall. They originally expected the fall to take about 20 minutes I think - so a 10 minute 24 mile to ground decent was about twice of what they expected. He was really moving! It seems like he did a great job completely shatterring the speed record, which seems to have cost him the 'longest time in freefall' record.
I don't think he is complaining, and for someone who loves to skydive, this was an experience that goes well beyond what he perhaps ever dreamed possible.
BBC is putting together some sort of special on this which I will happily watch when it comes out. The entire process has been interesting ... other than about an hour of waiting for the balloon to rise.