First it looks amazing. Honest question, why do all of these keyboards never have an extra column on the right. Standard querty layout has a lot of coding related extra keys to the right than the left. Similar with the ergodox ez and moonlander. Hard to break a years long habit of going up for a curly brace or bracket then down.
It really tends to be because the philosophy of homerow / economy of movement is quite high on the split / ergo keyboard communities, combined with the ease of creating temporary layers (imagine you had multiple programmable shift buttons).