Currently any text in a banner defaults to capital letters (CAPS LOCK) and left-justified format; it would be nice if admins could edit this to their liking. It's possible the justification is related to dynamic sizing for different platforms (phone, tablet, PC, etc.), so maybe this can't be changed, but it's very strange that one cannot adjust the font.
I was also going to request this, I think it's important to be able to customise this as our brand house style asks us to avoid all caps for readability and accessibility reasons.