I have asked Admin about this in the past due to issues discovered during IR work.
His stance is that the PIDs should be listed under non-sport. If gaming cards are continually being issued with these characters, the PID should be linked to both non-sport and gaming (just like, say, Bo Jackson is linked to both football and baseball).
Once the cards have been moved to a non-sport PID for the character, an IR submitted can be marked for Admin's attention to get the PIDs to appear in both categories.
Nec Aspera Terrent
I'll never quit collecting entirely, but I am downsizing. Check out my COMC store and help me thin out what I don't want so I can buy cards that I do want. See something you like? Send me a message on here, and we can knock the price down quite a bit. I'll even take a bit of a loss if it means getting you a card you really want.