Hi T0mb3ry,
I know you don't want to add more keys to your set, but I was just wondering if you would be able to add an extra Tab key to both the core sets just like what Zambumon was planning to do with Chocolatier. This will allow people to have an extra set of modifiers so they can have 2 layouts. For example, (1) TKL with Core Bones and (1) HHKB layout with the remaining modifiers w/ Bone Alphas.
Nice to see that this idea is finally getting mainstream, I proposed that ages ago in a different IC and I was fully ignored
)
I really like this idea cause we have 2 full bottom rows, we have 2 ansi 2,25u shift keys so you can build one board with 2,75u and one with 1,75u right shift, you have several caps keys so you won't lack one there. There are two enter keys available, one coloured and one gray. The only missing keys are the tab key and you have to find a proper way to include the backspace as only one 2u key is included, but as already mentioned you can go for a hhkb build which is very popular in general.