OH! And although I took a break, it's definitely not abandoned. Check out 3.0 which just released. : )
This is absolutely wonderful news. And might I additionally suggest that if your goal is simplicity that you maybe implement an "advanced mode"? So something that you toggle on in settings and it expands the capabilities of the editor. A place to put features you think are a bit too much for the base product but have enough people requesting them to justify implementation.
I'm sure people will appreciate having the option to get more complex with their rigs and that way it leaves the door open to people who want both a simple experience and a complex one.