Nope, I think 400-450 is my max and I've timed it once or twice. I'm probably slowing myself down picking up magics/rares and selling them every 5 minutes (about 15k gold per load). That and my gold pick-up radius sucks at just 6'. I dumped the other 7' for something like 20% gf and dps.
I also stick to Act 1 because the concentration of elites is higher in certain areas (get NV 5 quickly), I die less (almost 4k gold cost per death), I find roughly the same quality of items as in Act 2 since I can't do Act 3 without dying less than 2 times an hour, and I can load up on gf/mf gear.
Ya, not dying is ultimately one of the key ingredients to make gold and exp the quickest. I've streamlined running A1 so much that I'm up to 10.7m exp/hour and 188k gold/hour (I use 3 pieces of Cain's Legacy for the bonus 30% exp). I start with the Wortham quest at 1.7, do festering woods wp, the 3 crypts by the cemetary, run backwards to the entrance of the cathedral from the gardens, then continue on through the rest of the act to Wortham once the majority of those densely concentrated areas are cleared.
I can't imagine running less than 15' pickup. Even at 20' I still have to backtrack a tiny bit and that's annoying to me. Tracing over your steps again is another big thing to reduce how much you're getting per hour.
Also, I don't clear entire areas. I usually continue in one general direction and if that's the completion path then so be it. Keep on truckin'!
Stopping to identify and sell all that stuff is really slowing you down. It's not worth it because maybe 1/1000 items in A1 are worth keeping or trying to sell. Until 1.0.5 makes items roll based on the monster that drops it, this stuff is 99.9% garbage.
I have yet to see a legendary drop in any of these A1 runs though (probably about 200 runs?). I'm guessing they made it an incredibly small chance since that act is so easy and more people are probably doing it. Do you see many/any?