Depending on your product, you don't always want to show who are the voters and who are the users reporting bugs/feature requests and posting comments. It should only be visible to admin users.
I'm starting this. Anonymous mode will hide the real name behind the first letters of the name. User image will be also replaced with an auto-generated image containing the first letters of the name.
You can hide voters in board settings by disabling "Show voters names" checkbox. Nevertheless, the names of commenters will be still visible. Probably we need some feature to anonymize commenters like in Google docs, hiding real names under anonymized animal names.
@Alex, right - missing that option for comments. I find animal names not particular professional in a B2B context but simply initial like in the voters list would be fine. Also, not showing any personal avatar in that case.