As I stack up more interactions in a site, it gets pretty hard to track which objects on screen are using them, which would be really useful to me.
There are probably multiple ways it would be good to see this surfaced, but it would make sense to follow the model for viewing selector usage. I posted another idea about how that could be enhanced to help find selectors on a page, and a similar approach would be really handy for interactions:
That row is getting a little full, but I'd give up some title space for the functionality. (Or maybe toggling could be done by just the radio button, and clicking anywhere between that and the buttons on the right would open the item for editing. Then the Edit button could go away. That diverges from standard radio button target area, but for some reason, that's the way I keep trying to use the row anyway. That could be because I'm just still at a stage with interactions where my use is mostly editing vs. applying though.)