[enjalot]

Thanks for the constructive criticism! 1. You got it spot on, I wanted to keep a tight coupling with bl.ocks.org. Personally I spend most of my time in side-by-side mode which is probably indicative...

2. This one is a struggle, I want the width to stay 960px so that the end result is more likely to be compatible with bl.ocks, but this might be too patronizing.

3. Yep...

4. Yeah, I'm still working on this. I do think a tutorial is necessary for all the ways this can improve a person's workflow. Also, a lot of people will start with d3 here (I use it to teach, and expect others will too).

5. I've definitely paid attention to those, trying to take the good parts but stick to some firm design principles (mainly, code in blockbuilder should work 100% the same in bl.ocks.org AND when you clone it locally).

Thanks again for this comment. Please shoot me an email at [e-mail] or hit me up on twitter if you have more ideas/questions!