Simply put the addins manager as it is now is confusing to non-programmers who simply want an addin that works out of the box without needing any tweeking. If an addin needs tweeking it should allow that in a dialog or command box when it is running. While a programmer would want all the bells and whistles in an addin manager that permit script editing and he should get that. So it might be a good idea to either offer two versions of Fusion: a basic version with an intuitive addin manager and a version for developers which has the same addin manager plus another tab with editing and debugging features.