I have another list to try. The "What could have been" top ten list. Players that through injury or other unfortunate circumstances could have been a hall of famer, or if they already are, then in the top 10 of all time. In no particular order
Bill Walton
Len Bias
Brandon Roy
Greg Oden
Drazen Petrovic
Sam Bowie
Reggie Lewis
LLoyd Daniels
Derrick Rose
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Ok, that's only 9.
Arvydas Sabonis (could not come to the NBA earlier because of political reasons, became a hall of famer anyways)
Yao Ming (his feet unfortunately are made of glass)
T-Mac (hall of famer who could've done much more)
Steve Francis, Stephon Marbury, Gilbert Arenas (all had exceptional talents but never put all efforts into the game)
Darius Miles , Josh Howard (These were decent players who had everything to become much better)