An information box popup on a mouseover an event button would be very useful in a case where the event is complex.
For example, I use the XSeer plugin for automation. A typical event is 'Theater On'. This sets the lighting (X10), turns on equipment and sets inputs and outputs (IR).
Anyone else using a touch screen here wouldn't know what to expect with that button.
And at my age, I might not either, 10 minutes from now