The screenshots look pretty good, as well as the HTML character sheets. (Is it safe to assume the character sheet layout are based on 8.5x11 with 1-inch margins on all sides?) Will they include a user-friendly sheet editor? I'm not well-versed in XML.
Somehow, it is missing something. No, I'm not talking about the rest of the features that everyone wants but is not included in eTools. I'm talking about appearance. It's so bland, so neutral. Is there a way for user to customize the appearance of the screen: changing background color, use different fonts for headings, title bars, and whatnot? How about using different skins depending on theme like Greyhawk, Forgotten Realms, Kingdom of Kalamar, etc.?