I think once a keyboard design strays from the 'traditional' layout, it becomes harder to justify features like having a big spacebar, having an asymmetric layout, having a row-stagger.
Especially with a focus towards ergonomics, it's nicer to reduce hand movement and hand stretching; and reduce usage of the pinky fingers in favour of allowing the thumb to be used more. -- Albeit, yeah, layers do trade that reduced hand movement for additional complexity.
I see many designs retain the number row. It's very rare to see designs which retain a row stagger, but clearly intend for the thumb to have 2-3 keys within reach.
We're approaching "tattoo this on my body" levels of affection for the keeb.
| I started building a custom KB
I hope you pick it back up! I lost interest for a few months in the middle of building the one in the post, and I'm really glad I got back into it.
https://www.keychron.com/products/keychron-q10-alice-layout-...
It is perfect for me because I wanted a split layout but like you said, needed keys to be in the same place.
Market is definitely missing a full split keyboard (87+ keys). I'm also looking for one and I hate using keyboards with reduced number of keys.
(My site.)