autographs?

I recently attended the anime convention, Otakon, and had Japanese voice 
actor, Hikaru Midorikawa, autograph the CD booklet to my Flash Hiders SCD. 
After all, he did voice the lead character, Bang, in said game. This may 
sound like a silly question, but would this increase the collectibility of 
this game? Or in such cases would a programmer's autograph make more sense?

Dustin (AKA:Yuushi)