I love the pursed Caps Lock keys. And I'm always glad to see UK ISO offered. I'd like to see at least terminal ISO (ISO Enter, 1.25u shift, less/greater and R3 pipeslash) in the base, so if the UK kit didn't meet MOQ, there'd at least be physical coverage available for ISO boards. And for folks who needed UK keys, the UK kit would be a little smaller/cheaper.
Another suggestion would be that you could force accents for the Esc and Enter keys in the 40s kit to reduce its size - forced 40s accents are pretty common.
For the 40s kitting, the 1.75u R4 Lock key is rarely used anymore, and could be cut; most recent 40s kits omit it. In its place, a R2 1.25u Backspace key would be handy, as would be a 1.5u Shift, since there aren't any of those included. And as someone else mentioned, 2x of each spacebar size in the 40s, since they're used in pairs.
Someone's already mentioned that all DCS bars are convex now. I think that's everything that stands out to me - looks good! GLWIC!