Some communities are also destined to have super long usernames, just check out some of the usernames for moderators over at imgur:
And I can assure you that the imgur users enjoy their super long usernames, including these users from a couple of the most popular post comments today:
AdvancedIntellectualApplicationsofQuantumTunnelsUnfortunateSchmeltingAccidentImUploadingMyPicturesToThisWebsiteCalledImgurtomhiddlestonsthirdtesticlewhyyesyoucantouchmeallyouwantBatmansFirstEnemyWasCalledManBatHaveYouTriedInstallingAdobeReaderthisusernamehadbetternothavebeenchosenalreadyLayThineEyesUponThyFeildOfFucksAndSeeThatItIsBarren
I’m pretty sure they are also able to change their usernames any time they want.
I’m not saying it’s sane or right - but it exists.
Consider putting the username on the left.