I think I didn't understand the purpose of this possible Group Buy. I thought that the idea was to import the existing key sets as Ripster is telling.
Easier, Cheaper, 5 color choices, ISO compatible except the final Row, ANSI compatible except the Final row and Enter, Hiragama lettering( Is called like this?)...
BTW what gimpster says is interesting since Click Clack is not doing more Topre keycaps right now.