Textblade is the smallest possible form. Great, but it leaves me wondering if some people would be better served with a slightly larger version of the same thing.
Same design, no extra physical keys and no extra 'pads' on the existing 8 keys.
The home row pads are already 'full size', the only change I'm suggesting is to extend the keys and make the adjacent pads larger too.
Not a huge amount, just enough to permit more lazy typing, maybe a 20% increase in footprint.
So it continues to be the same 40% (3 row abbreviated) keyboard in terms of targets to hit & makes the same heavy use of layers to get all the extra keys and functions.
Collapsed would be the same thickness, and still be far smaller than all the other portables on the market.
I've said in another thread I don't expect the TB to feel cramped like most compact keyboards to because it should be forgiving of catching the boundries between pads. That said you'll still have to learn not to stretch as far as you're trained to and I can't help thinking the most compact layout will cost some speed accuracy vs standard size.
I think I might actually prefer a textblade that gives up a little size but provides spacing like a 40% keyboard with full size keys.
Would allow greater margins for the sensing too.