Loosening of "What Can Be Placed in What" Rules in App Structure Window

I keep trying to move elements inside other elements in the App Structure window and finding it isn’t possible, when it is definitely semantically possible in HTML.

This is a feature request to open up some of those rules, specifically for moving:
(semantics shown in brackets)

• A Row within a Repeat (div within div) - this cannot be created or moved…
• A Section within a Section (section within section)
• A Container within a Container (div within div)

Others to be added to the list as I find them!

Best wishes,
Antony.

PS - it seems moving these things is possible in the DOM but not in the App Struture…