Yeah, I see the disconnect, bchat. I made the assumption that basic comic reader features would be carried over blindly. I almost always read with "fit width" set, too, and wouldn't touch something without it.
But a project like this is less about the software (except for demonstration purposes) than making sure the format covers everything we'd want IF it became popular.
For example, GAC once had that crash where we lost all the file names; reconstructing that from inside the files themselves would've made life far easier. By the same token, it'd be easy for any of us to automatically save files to the right location in our private libraries, whether we organize by publisher, year, artist, or whatever. If we had unique ID numbers given to the books, we'd be able to distinguish the scanner's original from later-edited versions, automatically filter books we've been asked not to host, and so forth. If it had the text of the comic, someone could copy it out and work with the transcript. Holding the panel geometry would make it possible for the software to allow you to copy specific panels, too, which might be handy.
So there's a ton of potential in just the idea, regardless of the software. The chicken-and-egg part, though, is without really good software (especially for the scanner, who would now have more work), nobody'll do the work, which basically means that it's the worst case scenario: Functionally the same as CBR files, but incompatible. That critical mass is difficult, especially with such a strongly-established format.