I've thought about this also.
I'm working on the baseball subset of ten (about 1/2 done). I'm thinking about keeping mine raw & displaying them in a single sheet. I realize your situation is different, but if you were to sell them at a later date, it's possible the auction house would have them graded for you at no cost to you. I guess, I would leave them as they are until to you decide to move them.
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