I'd be interested if it got expanded. You can't cater to all layouts, but it would be nice if there was an R3 tab and an additional R4 shift.
Two R4 1.5 keys would also cater to Corne, Atreus, etc.
I am also thinking full icon mods would be flexible when used with weeb alphas, often sold separately, allowing to skip an expensive base kit.
I joined the GMK blank GB for N9 mods, but they didn't make MOQ on Corne thumb keys, so I went with CR instead. Depending on the price I would be in for this.