I actually have begun to really object to lots of hover behaviors. For example half the time on GMail I have a random “JOE SMITH USER” card open because my mouse just happened to hover over that at the time I was doing other things in another window nearby.
Since hovers have no analog on touch devices, and very few people ever ask for this, I don’t see a lot of value in spending any time on it.
(we actually had first post hover behaviors like this early in Discourse and dropped it… nobody seemed to care.)