Yeah, I've never been happy with the UI for 1 or more buttons.. each one supports 3 functions: click, double-click, hold. Press and hold is how I show more device options for a tile so that makes things a little tricky. Then, add several more buttons and things get messy..
What I might end up doing is offering a few options for how to display buttons.. with 1 option just showing a popup with all of the buttons in a scrollable vertical list. That would allow for any number of buttons being supported
