A portrait shaped layout cannot of course maintain its original size and shape in a landscape layout. The objects within the portrait layout can only be relocated and/or rotated to reorient within a landscape view.
Uncommenting 'AutoScaleAll ' keeps things from falling overboard but doesn't provide for sea-legs. does that sum it up?
From what I understand you asking is that you want to have extra invisible panels to help move around your visible stuff so it looks good on different aspect ratios. I have done this myself. That way I don't a big black bar at the bottom of the screen on longer aspect ratios. However, the problem is if you do it for portrait, then when you go to landscape, B4A does not allow you to change the layout. The invisible panles are still there. So if you try to change them they would look good in landscape but not in portrait. It's on or the other.
For those who have no idea what I mean, If the aspect ratio is longer on a Samsung galaxy s phone, then a 320x480 sized portrait layout would have a black bar at the bottom as it's longer. To overcome this, you can put invisible panels on the activity screen. Inside these panels you put bittons, labels and other panels. You lock the invisible panels to the top, left, right and bottom of the screen. This would take away the black bar at the bottom of the screen. You would end up wit a little extra room in the middle of the screen. You also need to have a generic background and stretch it out vertically and hortzontally so that at any aspect ratio it fill the whole sreeen.