Hey Dox, I have two items to nag you about:1)
I've spent a tremendous amount of time contemplating/using/experimenting with Kinesis key placement/add/delete/moves. I believe the most recent render is the best there can be WITHOUT moving fingers from the home row. This is almost the same as what I came up with. (my pic is pretty bad, and the added keys are covering some existing keys, but it's a mock up). It's perfectly ok to have keys that you need to move off home row to hit, but I decided I will not address that until I have made every effort to keep keys within the target range of fingers/thumbs and staying on home row.
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These are some of my thoughts on the right hand keywell (matching your right hand render):
-The white key extreme lower right under the shift (pinky activated) was to possibly be a Fn key and is replicated on the left keywell. (I've added these 2 keys to my mod, it's quite excellent).
-The white key under the arrow key, next to the right of the space key, if a little lower could be Sordnas palm activated shift key (maybe use a long key?).
-The white key to the left lower side of thumb cluster, allows activation without leaving home row.
-The long white keys to the left of "HN" and "6Y" I was undecided if they could be square (2 square keys to the left of "Y" and "H") or the long keys you see for easier touch-type targets.
The reasons I have been so hell-bent on increasing the number of keys, and keeping them within touch-type range, was to be able to provide dual modifiers (per Sordna, Architect). These adds allow 5 keys per side. With what I have here, Command/Windows, CTRL, ALT/OPT, shift, Fn, can be used by either hand, and still have the ability to have dual enters or whatever. And still have the option of a couple keys that take your fingers off home row, if you really want to do that 2)
Regarding the integrated trackpoint (or pointing device). I strongly suggest that you don't feel you can't move forward without it, but don't dare move forward unless you have made provisions for it. Again, I've spent so much time on this. Ask yourself this one question: Why am I making this? A: Ergonomics. What's more un-ergonomic than taking your hand off home row and off the keyboard?. Easy options for pointing devices are trackpoint, multi-direction scrollwheel, and thumb scrollball (see Alphagrip AG-5, I'm a huge fan of these things).
Random note. You know this design is screaming to be mounted on chair arms, or similar. What about a pointing device option then? What about tenting this keyboard...even worse, you'd have to "un-tent" your wrist to use a mouse or whatever, then "re-tent". How stone age and RSI prone is that?