Keeping it simple while still remaining functional for "advanced" users is one of my primary goals. We will start with the basics, but only so we can actually launch the product asap.
That's really the problem we're looking to solving though. Simplifying the mess. (that includes billing)
In the end, we have a certain feature set that's our internal goal. Whether their is demand for every part of that is another topic. Polling and a/b testing will determine where our development efforts are focused and how the first iterations shape up.
btw, thanks :)