I don't know of any maintainers who actually use votes to govern their priorities, they're usually just a placebo that prevents me tooing.
Perhaps we could have a "I am affected by this bug" button? That should be slightly more useful to maintainers.
Resolved in 10d527f5
I just wanted to document that I was not able to figure out how to achieve the "assign a label to an existing ticket when there are no labels" use case. I had to ask for help in the IRC channel.