I think you are misunderstanding me, or not fully reading my post.
Emptying containers automatically, flattening widgets (not the widgets, their hierarchy) and having more native widgets to chose from is what the Qt Designer in itself is all about - adding comfort, and there is no wrong in saying it would be nice and comfortable to have without going through the effort (which I insist is alot for non-expert users) of extending the Qt Designer on your own.
If I said a glass of orange juice would be nice too, would you ask me sorry, but who forbids you to grow an orange tree and squeezing your own juice? I am simply saying it would be comfortable.
Thanks
Bookmarks