I'm hoping there's an episode in Season 4 where Babs gets her cutie mark. It'd be a nice flip on her first appearance where she kept trying to hide her blank flank, in this one she'd keep trying to hide her cutie mark because she thinks the others won't let her be a CMC anymore.
I would be very happy if she was to appear again. At the very beginning of the episode I found her to be a very amazing character. Totally worth any trama that has been bestowed upon my heart from any pain the CMC faced.