Saber's Keyboard Layouts(summary is below)
I. Version 1
Qwerty to the left, and dead key diacritics(Acute, Grave, Ring, Umlaut, Circumflex, Tilde) at P+1 and L+1.
I like the way this is going.
Comments:
I would prefer a dedicated Tab and I would probably change the order to N M , . SPACE (that makes more sense to me, and it also keeps the Dvorak people happy). Double-width space bar just wastes a key imo.
The dedicated dead diacritics are pretty cool.
Umlaut and acute as primary makes sense, as those are very important. Circumflex and grave as secondary (shift) also makes sense, they are also important. At the third level I would probably put cedilla/ogonek -- you can combine those into one diacritic since both are "curly thingie below" diacritics and there is no overlap between the cedilla letters (Ç Ş mostly) and the ogonek letters (ą ę į ų mostly) -- and caron (for č š ž ř ě).
Tilde and ring are basically mostly just used for ñ and å, so it doesn't really pay off to implement them as dead diacritics (if you need those letters in your language, you better make a dedicated direct ñ or å key). Or you could put those at Fn+Shift and have 4 dead diacritics per key.
I don't like how you have three shifts (two shoulder shifts and one keyboard shift) but only one Fn. It would be much better to have Fn also on a shoulder button.
(I) and (II) as labels for Insert and Delete does not make much sense to me.
The location of F11 and F12 feels forced.
I don't think we need keys for µ § ß °. You could remove those. It's nice if you can have
no Fn-labels on the vowels (AEUIO) and perhaps also not on S (and C?). Most of the international letters are variants of those letters, so it makes sense to map them at Fn+(AEUIOS), but the actual label will be different for everyone. E.g. on Fn+A you could have à, å, ä, á, â, ã, ā, æ, or ą depending on your need/preference, on Fn+S you could have ß, ş, š, or ś, on Fn+O you could have ô, ö, ø, œ, ò, ó, õ, and so on.
Your placement of Scroll, Pause, NumLock does not work because it conflicts with Shift-F8/F9/F10.
Having a dedicated key for 3G feels like a waste, especially because 3G is optional so many units will not even have it.
Dedicated keys for BT/USB/Wifi could also turn out to be not really necessary -- e.g. I'm assuming/hoping that the USB ports on the Pyra will not need to be switched off manually to save battery life, so you can just keep them "on" all the time (the hardware and software will do the power saving magic automatically, I hope).
Same with BT and Wifi: hopefully the new hardware is power-efficient enough for most people to not have to care about toggling it. Of course we still need something to switch things off (airplane mode), but it should be something you do much more rarely than on the Pandora.
Getting rid of some of those hardware buttons would free up some room for a dedicated Esc key and a brightness key that does not depend on overloading the dpad (which is I guess the main thing that kept you from putting Fn at a shoulder button).