On the plus side, you'll unlock additional character skins as you play which helps mix up the visuals a bit. (videochums.com)
Some of these subsequent releases featured notable changes such as additional characters, others had more subtle gameplay and balancing tweaks. (wizarddojo.com)
These might prevent a studio from pursuing additional characters in their games, but there are reasons they might not want to in the first place. (waypoint.vice.com)