There's occasional complaints, particularly with the new master story mode, that some people just don't have bronze or silver characters. I know I've kept mine for the most part because I like the rewards for the bronze and silver prize fights, so I was surprised to learn that some people hadn't kept theirs. They meanwhile seem a little baffled that anyone would. I'm curious how common it actually is to keep or get rid of you bronze and silver characters, though clearly there's limits to how much a forum poll will tell us. If you want to include how many you have fully built, that would also be cool to see! I personally have 10 bronzes & 12 silvers. Not counting my silver Stage Fright, who exists only to die in tough rift battles. Probably that's too many, but it'd feel silly to me to get rid of any of them now.