John
The way I look at it is I think you are asking too much from simple instruments tracks. They were meant for quick and very easy usage. I have noticed lots of posts complaining about them because people want them to act as if they were regular MIDI and audio tracks. Clearly they are not. If one needs to do editing or any extra things using them it would be far better to use MIDI and separate audio tracks that have all the power people are looking for. The key word is simple. When something is simplified it often means you lose power.
I think I agree with your sentiments, John.
The only thing that seems to confuse the issue is that the cloned track looks like a S.I.T., when, in fact, it is more like a MIDI track. I can see why people would want it to work differently, but it is what it is.
As I stated before, I use S.I.T. when I am initially sketching out an idea, but split them into Audio and MIDI tracks when I want to work on them. They are handy, but, as you say, they are simple. A little like me..