Mine is far more humble, I'm afraid.
"cornerstone cards" I already have:
T200 Cleveland SGC30
T200 Pitt SGC60
T206 Lajoie w/bat SGC50
Cornerstones to hopefully come some day:
a Goudey: Ruth, Gehrig, Greenberg, Foxx
a T206 Mathewson (portrait or dark cap)
PCs with solid quality image of Cobb, Wagner and Johnson
Postwar:
1948 Leaf Musial
1954 RCs of Aaron and Banks
a quality Jackie Robinson
Clearly, I have my work cut out for me!