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.
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.