Is the 40s kit trying to also be a spacebars kit? As a 40s user, there are zero 40s layouts/boards (that I know of) which use a 6u spacebar. Further, since there aren’t any 6u spacebars in the base kit, layouts which use a 6u spacebar would need to pick up the 40s kit for just a spacebar. In my opinion, move the 6u spacebars to the base kit and drop them from the 40s kit.
I realize that putting 6u spacebars into the 40s kit could also be a mechanism to try and sell more 40s kits so they hit MOQ, but I doubt you’ll get many 6u spacebar users to pay the 40s premium (assuming the 40s kit will be in the $45-$55 USD range) for just a spacebar.
Just my two cents on the kitting choices. Love the teal color choice btw!