Like mentioned in this thread, last year's 6-hour AO final was very long to watch, in my opinion too long. Compare it to yesterday's Fed-Tsonga QF that lasted about 4 hours. In my opinion, five setters should mostly last less than five hours. Marathon matches aren't very TV friendly, and also the player is dead in the next match, unless he has the egg. And Fed-Tsonga was still as exciting as last year's final, actually the first four sets were tighter as in last year's final. But at least didn't have the "When does this end?" feeling like I had during last year's final.
Not only because of the grinding and the pushing, last year's AO final was 6 hours was due to endless butt-pickings and ball-bouncing.