Agreed Chris...a handicap system would be a cool way to potentially give sub 500k players a fighting chance at beating people that have cracked 900k, but the simple fact that if a 500k player did put up a 750k game...it would all but make it impossible for anyone else to win. People could put up 1.3M games with their handicaps, which makes it literally impossible for a 900k player to win.
A 'head to head' system would be the only idea I had for giving players with lower personal bests, to have a fighting 'chance'. Chance in quotes, because as we all know, even the best players will have games (if played all the way through) end on L4 if they get rivet/PF screwed...and wild barrels to the face early in the game.
Would be interesting to hold an online "Head to Head" bracketed tournament one time. No handicaps...just the luck of the draw...the luck of the DK game you get...and your own personal skill.
Something like this would only be possible online...becasue you'd need a lot of DK machines. You would also need cooperation from the players. They would have to play their games out by a certain time, tally the results, see who advances, setup the next round, play again...until the final 2 are left. It might even take Saturday and Sunday to complete the whole thing...but it would be cool/fun/different.