A couple of small points of feedback after using it for a few minutes:
* The move to front/back hotkey tooltips are both listed as ].
* There doesn't seem to be a way to add a link to words/text within a text box, only the text box itself. This is quite different from how most people expect links to work on web pages.
* Speaking of links, if you have an image with transparent pixels in front of another image (such as the HyperCard screenshot) and you add a link to the image in back, the link is not clickable. It makes sense why, but it's a bit counterintuitive (and also limits the usefulness of images with transparency).
* The move to front/back hotkey tooltips are both listed as ].
* There doesn't seem to be a way to add a link to words/text within a text box, only the text box itself. This is quite different from how most people expect links to work on web pages.
* Speaking of links, if you have an image with transparent pixels in front of another image (such as the HyperCard screenshot) and you add a link to the image in back, the link is not clickable. It makes sense why, but it's a bit counterintuitive (and also limits the usefulness of images with transparency).