No. Half a button is a lot of height to add. It'll be the difference between pocketable and not pocketable, because the pandora's really on the edge there.
I'm looking at my Pandora right now and seeing room to add half a button w/o even increasing the height of the device, with some room to spare. So we likely wouldn't even have to increase it by half a button.
-God Ginrai
Did you take into account that the buttons need to be far enough from the hinge (at least a quarter of a thumb, half would be better) to be pressable comfortably and far enough from the keyboard that you don't accidentally press any of its keys?
EDIT: clarification: thumb's width, not length or thickness
Yes, I did. There was actually room without even removing the number row at the top of the Pandora. If we can assume that row won't be there, then it's even roomier.
I agree that we may be able to find enough height for half an extra button by using the space that is now used for 0 and backspace on the Pandora.
I also agree that making the device a bit wider would in itself not be a huge problem for pocketability. We may have different ideas though about how much "a bit" can be.
Device width is not the only thing that would change. It may be an issue that the right nub would be quite a bit further away from the edge. And if we want to keep both nubs positioned symmetrically, it means the width would have to increase on the other side too, which would cause the device to become maybe 20mm wider, which is starting to get too much for me. Note that the action buttons like they are now already take up slightly more space than the dpad. And making it that wide means that again, the screen will take up only part of the lid, such that when playing 3:4 games at the right aspect ratio, less than half of the lid width can be used.
There's actually room on the current Pandora's layout to move the nubs a little closer to the center, where the start/select/Pandora buttons are. If we make use of this, we probably would only have to increase the width by the width of one button, even to create a symmetrical layout.
The button layout does not change the size of the screen. You are going to have to see it at that size and resolution whether we have a 6-button layout or not.
Here's a 7 button version:
http://www.keyboard-layout-editor.com/#/layouts/59ecd6027aacf85d8f3e58471483d984
This illustrates the problem with a more conventional 6-button layout:
http://www.keyboard-layout-editor.com/#/layouts/a5b44b2af29d32e9ed7f0bfdde26874e
It can be solved by making the device wider, or by moving the start/select/pyra buttons to make room for the right nub, like this:
http://www.keyboard-layout-editor.com/#/layouts/4f83dd73daba13d958df88dcd813e74f
Either way, the nubs are going to end up too far away from the edge to be comfortable to me.
That 6-button layout you posted doesn't even make sense. It's curved completely opposite of the natural path your thumb travels. And as I said before, the different sized buttons combined with the fact that the buttons arc in two different directions makes the 7-button layout you posted an absolute nightmare to use.
One thing that
is interesting is the idea to move the start/select/Pyra buttons over next to the dpad. I do like that idea, because it makes it easier to quickly reach those buttons. (Plus, if they are still mapped to ctrl and alt, it puts them in an easier place to use as modifier keys)
As for the nubs, I honestly don't feel that increasing the distance of the nubs from the edge by one button-width is really shifting them far enough to be uncomfortable.
-God Ginrai