Quick update:
Weww. square won by quite a bit, which was my personal favorite too
I've talked to GMK and they said they can make the square ESC key!
1 line tab key as suggested by Jebbra also made it
Added 1u alt and 1u ctrl to the base kit to support 65% board like the tada68
Remove r3 1.75 control key as downward pointing arrow can also act as control key
Updated kit on Original Post
Heres the official gmk render and colour codes