Even though I've been working in Joomla for several years I'd never actually written a component, module or plugin. Yesterday I started out my quest in the morning to write a component and within 2 hours I found Marco's Component Maker and built a fully operational component. Simply amazing! It saved me DAYS if not WEEKS of work.
I look forward to the implementation of all the things you have listed as "not implemented yet".
Also, it would be nice if there was some sort of support forum or email for questions and issues.