I'm not entirely sure that "More is good" in this context. But then, I know Rails already so I'm not part of your target market, I suppose.
Still, I would feel somewhat daunted by 15 hours of tutorials and 1000 pages of documentation. Sounds more like .NET than Rails.
The famous 'build a blog in 15 minutes' was Rails' elevator pitch: intriguing, representative, but by no means a complete picture. You still needed a full reference to get real work done. That's what this is.
Also, as I mentioned, I'm not part of the target market, so my criticism may be off-base.
The bottom line is that there's a world of difference between a tiny toy app and a real-world production app. The Rails Tutorial screencasts do teach you a toy app along the way (Lesson 2), but preparing you to make industrial-strength webapps is their raison d'être (Lessons 3–12). As it turns out, that takes more than 15 minutes. :-)
P.S. The "1000 pages" number included the page count of the Rails 2.3 Tutorial book, which many people won't need (though it's still useful for people with legacy apps). The Rails 3 Tutorial book itself is only about 500 pages, and I've change the wording on the site to make it sound less intimidating. Thanks!