Notice! Seems like you misplaced one of the pictures! Under geode the keyboard picture seems more like taken from Pixel C concept!
I really like the SHIELD design, but while I understand the idea behind placement of volume buttons, it's really convenient for tablet, but I feel like it's too inconvenient when used as laptop. Also I will prefer if power button will be placed on the side, I quite like the idea of buttons in geode (it's actually good to have capacitive buttons when used on lap without holding, as you will probably need to raise both hands to press ordinary button), but make sure that they can be easily pressed with thumb/index finger, while being held as a tablet. Power button(pushable) fingerprint scanner is actually a good idea with, since 1: it doesn't need to be always turned on, 2: you will always press with similar force, which in my mind makes it easier to recognize the fingerprint.
Seems like the idea of fingerprint scanner is sealed, how many fingers will it be able to remember?
will the rubber be able to withstand prolonged use without wearing out? it looks really horrible, maybe use silicone (it seems more durable, while having nearly same friction)
Tried to visualize how the Shield will feel in hands with my Lenovo g580 laptop, since it have similar profile, buttons placed on edge can be easily pressed with either thumb or index finger (index finger is more comfortable), both tend to push nearly same places (starting from upper edge): highest button in 1-2 cm range, fingerprint scanner can take space in 2-3.5 cm range and lowest button in 3.5-4.5 cm range. All results made while holding it and pressing buttons instinctively, while trying to push power button with whole finger. Albeit it will be easier to push power button as fingerprint scanner if placed higher than volume buttons, it will be harder to use capacitive volume buttons. It's quite weird to visualize holding 12.3" tablet with 15.6" 2kg laptop .
Will we still get a depth(IR) camera for hello, or you decided that fingerprint scanner will be more reasonable in terms of price?
What do you mean by "protective rubber on both sides"? Face and back, or left and right?
As I can see, there won't be any tilt on keyboard, will we have to place sth under the tablet to have a tilt?
Why only 1 charging port? I like the idea of being able to charge the tablet from both sides, like chromebook pixel, second port (preferably left one) can be just usb 3.1, since it can also pass 100w (5a, 20v).
Why is audio output on the right? Most head/earphones I've seen tend to connect either from the left side or being neutral, I'll rather have thunderbolt with dockstation on the right side.
Upd. forgot to mention that placement of some particular keys is weird, also the idea of triggerable fn key from @Filip_Ka is nice, also I would like to see fn-driven numpad (at least as hidden thing) and misc buttons (PgUp, PgDn, Home, End, Pause Break). I also dislike the lack of PrtSc and Insert buttons, they fit nicely on my keyboard within 27 cm (the length of keyboard - numpad)
PgUp PgDn Home End can be placed on arrow keys (seems logical to me)
I personally use Home End quite a lot, while pretty much stopped using Insert after I found out ctrl combinations (Insert itself doesn't seem to work in most applications, can remember it working only in console), PrtSc and Pause Break is quite convenient to have, PgUp, PgDn I don't use that much, so they fall in previous category for me.
P.S. I think that rubber back will nicely combine with magnetic dockstation concept
P.P.S. Is that rubber back is what my idea of rubberized kickstand evolved into, or it was floating around before? (though, it doesn't seems to fill initial purpose, so probably the latter)