I'm really anticipating the return of this GB proper - if and when it happens. I missed out on the last round but definitely want it in my collection.
That being said, I can't help but feel the current kit structure is *nuts*. The modifier kits are advertised as supporting HHKB, but it doesn't support the bottom row - not by itself at least. You get the split right shift + Fn and the 1.5u backspace, but then you need to get the hobbyist kit. This gets you the 7u spacebar, but only one 1u Code key, when two would've been the obvious choice. Want a non-stepped 1.75u Ctrl key? Gotta get the exotic kit as well. That's two addon kits, from which you'll only need 1 or 2 keys, to get the actual HHKB layout that the base alpha+mod kits "support". Then there's the Bauhaus kit which has a 1.75u "hack" key, but no caps lock, and the spacebar kit, which would probably have been better off being distributed across other addon kits.
If and when Canvas is brought back, I really hope they revise the kit structure.