User blog comment:Sithlord Andeddu/Sweet Commander Snack's return/@comment-24850639-20161207181702

Based on how Big Mom responded to Snack's and Cracker's defeat, we know that she places a rather high value on her Sweet Commanders. If not for them being her children, then at the very least for their military might. That being said, running the risk of losing yet another sweet commander just so that one might possibly can be gained seems pretty counter-productive. They will probably have a plethora of their own enemies at the Tea Party, so she can't really afford to not have her Top Brass in prime condition.

Also, I don't think taking an L is always enough for a Yonko's leiutenant to lose their position. I think it speaks volumes that Big Mom hasn't replaced Snack after the 1-2 years since their defeat. To me this means that either the other children are so far below the sweet commanders in power that she doesn't feel any of the current ones are worthy, or that Snack had an ability that is absolutely irreplaceable. I'm personally leaning to the latter option. I'm with most people who believe that Snack wouldn't have even been mentioned if he wasn't still alive, and still had something to contribute to this story arc. Also assuming that whatever his ability was is based on a devil fruit, it'd make sense that Big Mom keep him around, rather than risk having to hunt for his devil fruit again.