Hi folks! Kitting is finalized in the original post. Take a look and let me know if anything looks ridiculous.
More news very very soon.
Hey there! I had a few thoughts on the updated kits that I'd like to share 

I would recommend changing 
Scroll to 
Scroll↲Lock if you're going the full OG route with the legends. Or, if you don't want to do that, change all of the two-line legends to single-line. Either way, it would be good to have consistency, both visual and synchronistic. As a matter of fact, I would argue that 
Page↲Up, 
Page↲Down should be changed to 
Pg Up, 
Pg Dn either way because that's how OG sets did it, and because it matches the rest of the legends better visually.
Is the omission of a scooped homing numpad 5 key in base a conscious choice?
I believe that ISO-UK keys are not worth including in base because too few people use them to justify even a $5 increase in the price of the base kit (which is approx. what you're looking at currently). These keys may be better suited for the extension kit. Your call.
I think that 
Break is a cool novelty to include in base in place of the 
Pause key, seeing as it's your username, but having it as an extra key in the extension kit sort of misses the point, imo. I would either change 
Pause to 
Break in base, or remove the key from extension altogether.
The extension kit is crucially missing R5 1u 
Lower, 
Raise, 2× 1u space and R4 1u 
Shift keys needed for 40% ortho boards.
The lack of Shift could be worked around by changing the R4 1u 
End key in base to 
Data as described in 
this post (although in that case I would actually also change the R4 1u Enter in the extension kit to Shift).
I recommend removing 1.75u space from the extension kit because the few 40% boards that use it are not very common or popular. You seem to be going for basic, albeit solid 40% support here, and there are more important 40% keys (such as those listed above) that could be included instead of 1.75u space.
The extension kit will also need a R5 1u 
Alt key to pair with the two 1.5u Supers. Otherwise, these won't really be usable.
Maybe I'm missing something, but I don't see the point behind the R5 1u Cherry icon key? Not only that, but this key would also require a new mold to be created because R1–R4 1u molds can't be reused on R0 and R5, and I doubt that GMK has a R5 Cherry icon mold. I suggest removing this key.
I think there were a few more things that I wanted to mention, but they're evading me at the moment. I'll add them later if they come back to me 
