Quick question mwf13: do you really want autographs of players who's auto's are already flooding the market? Many of the names you listed have autographs in numerous companies, let alone products. All of the hockey players you listed (save Eruzione, who does have very exclusive auto's from years past) have been featured consistently in products for the past 3-4 years (since Panini's arrival).
Obviously some of the athletes in the checklist, such as Howe and Brooks Robinson, have been featured in products for years, but many do not have or have very scarce auto's.
I'm not really going to attempt to refute any of your points (not right now, anyways) but I'm just asking you if you really want Dr. Price to include autographs of athletes who have had auto's readily available over the past decade?
I will leave my signature the same until the Toronto Maple Leafs miss the Stanley Cup playoffs. In short, I will never change my signature.