Although it would take the fun out of endless and sometimes educational debates
(Hey, this big Invasor debate seems to have kept anyone from mentioning
Biancone's problems at Keeneland), it is possible that Racing could set
standards in certain areas,and Greatness/ Immortality could be quantified to an
extent.

1) Minimum qualifications for a colt/horse to enter stud duty: Lets say for
example that no horse would be allowed to enter stud in the US unless he was
a) a stakes winner or b) graded stakes placed or c) had minimum earnings of
$300,000 and d) had to have started 10 times. You can play with a, b, c, and d
however you want, but the end result would be a stouter gene pool and a possible
end to equine early retirement.

You could still have stallions standing that did not meet the qualifications
listed above, but their progeny would not be permitted to compete in Graded
stakes races.

2) Minimum requirements for Eclipse Award winners in all categories including
Horse of the Year. If no animal in a certain category meets the stated
requirements, whatever they might be, no Eclipse is awarded in that category.

3) Minimum requirements for entry into the Racing Hall of Fame.