Honestly, I feel like I'm getting close to the end of Frank's personal arc. He's found his purpose, and that's to bring justice to the criminals the law can't - or just doesn't - touch. I might be able to wrap up things nice and neat at the end of the season, or sometime early in season two, without having to just kill him off so that I can switch to the Question (who, I feel, has a lot of potential from what I've been secretly cooking up). We can all just assume Frank's doing spectacular feats of gunplay in the background. And hey, if secondary characters do become a thing, then I can have the best of both worlds and do both.