One thing that mystifies me is, why are digital comics simply print comics "scanned" for a digital screen?
That doesn't really make sense to me.
You should be able to, with one touch, switch seamlessly between pencils, inks, colors, and the final page, at any point in the comic. You should be able to tap a button, and switch colorists or inkers and see the same comic interpreted different ways. You should be able to make all the letterings disappear if you want to admire the artwork. You should be able to "draw" a square (with your fingers) around any cool piece of comics artwork, and set it as your iPhone/Android/iPad/etc's background image.
You should be able to have a page by page AUDIO commentary from the writers. And another commentary from the editor, and the artists. Hell, from EVERYBODY involved.
They should start making comics in a form factor that fits well in smartphones and tablets. Comics which all panels fit well into the rectangular phone shape.
At the end of EVERY new comic there should be a box where you can write your thoughts on that exact comic and zoom it's off to a digital discussion thread (like the review threads here) for that particular issue.
These random ideas are just the tip of the iceberg really. if you're going to have digital comics, have them be DIGITAL COMICS.