First, I totally understand what it's like to ship an MVP. When we launched our SaaS service we didn't even have a way to rebill our subscribers, knowing we had a month to figure that out. So add this feedback to the end of your list because I'm sure you've got your hands full!
- I didn't realize at first that the Google Doc and example page were live. I thought they were just screenshots. There are probably some design affordances you can use to make this clearer.
- You don't have a call to action above the fold. In fact, you have a green "register" button but it's part of your example. Similarly, Log In could just be a link, giving more attention to Sign Up in the header.
- I think "projects" is a vague name. There are words that can probably do a better job explaining what these are. Themes? Packages?
All in all, great job. It's rare to see so much documentation on launch day!