*> Nice idea but the big problem I can see is that nobody will want to vote thei...

> Nice idea but the big problem I can see is that nobody will want to vote their bosses emails as a waste of time.

Are you kidding? That's the whole point!

Presumably, the boss allowing it in the first place is a signal that they're interested in this feedback from their employees.

Yes and no, corporate politics is a minefield and often subtle.