Tom,
After reading some other threads on similar/the same topic and thinking about it for a bit, I think the next step in terms of making Corona simpler it is not really so much about certain buttons, etc. as it is about workflow. Like in the previous post I made above, ideally there shouldn't be a question on which way is the best in order to accomplish something, it is then not simple anymore.
Whenever I read posts with skilled users arguing of which way is best to place a car against a road backplate, expose a scene or other in theory basic tasks, it to me indicates that things could be simplified. Not the tools or options themselves perhaps, but the workflow.