Oh with regards to your payoff: "Design & build in your browser" I don't design in the browser. I do build my design in the browser. I design on paper, using Photoshop, Illustrator and what not. If you're designing you don't have a clear idea of what you're going to make and you're changing things, replacing, resizing... Wouldn't recommend that in a browser ;-)
We want you to design in the browser. We want you to do that experimentation in your browser with easel. :) The ultimate goal of easel is to be the tool for designing websites.
