It would be great to be able to add on-card highlights.

What I mean by that is, it would be very useful to be able to recreate what digital card games do where you can put your cursor over a keyword or a specific part of a card and more information shows up. So we could, programmatically, make it so that you can add a box around a part of the image that would be highlighted (and colored, if desired) and mousing over said highlight would display text (or a UI).

One thing this would require is a change to how (or a new way of) alt-zooming the images, since currently moving mouse off the object makes the preview disappear.

This would be super useful for making rules of games much clearer. Anytime any sort of keywords shows up, you could have the rules for them appear on mouse-over.