We've had a few requests for this and the mods are split so we'd like to hear from the community. If you're unsure what bandwagon flairs are you can look at /r/baseball's flair (example: http://imgur.com/Oy0hpD4). There would be one flair for each of the 16 playoff teams and the idea is people of non-playoff teams can "jump on the bandwagon" by switching their flairs.