Get rid of incomplete passes. If the ball stays in bounds, the ball is live until someone is tackled with it in possession. I can even hit the ground. No more, what's a catch, what's not a catch. Won't matter.
I guess I didn't quite comprehend the bonus points part. My table was assuming there were no bonus points, just points given from the table.
Also, I hear what you're saying about being lucky in the later rounds, but similar to a pass that bounced off a receiver's hands, intercepted and returned for a TD, luck should be rewarded. It won't skew the numbers too much because there maybe one or two 3x probowlers drafted in the later rounds and maybe a few dozen 2 of 3 year starters out there. Also, if I'm not mistaken, Brady doesn't even meet your criteria of making the probowl his first 3 years in the league.