Thanks for the support everyone!
Regarding adding a map onto the aluminum version - this has been requested by several people, but I'm kind of hesitant to do it and currently don't have plans to. For aluminum I'll have to either laser-engrave or print the map on somehow, which would add a fair amount of cost, and it most likely won't look as good as the FR4 bottom. Alternatively I could make a pocket on the bottom piece to embed an FR4 panel that has the artwork on it, but this would mean the bottom of the keyboard is now FR4 instead of aluminum, and the keyboard would feel a bit cheaper to hold. This is also complicated somewhat by the removable weight on the bottom on the aluminum one, which some people will have on (to set the keyboard to 6.4°) and some people won't have (if they want a 0° typing angle), and I'm not sure if I can get a design that looks good with both the weight on and the weight removed.
I added the map to the 3D-printed version since the bottom FR4 panel is manufactured as a PCB, so I get silkscreen, copper, and solder-mask layers for free, so I figured I might I might as well use those to add artwork. I was originally going to do a laser-cut stainless or brass bottom panel, but FR4 ended up being much cheaper, and being able to do the map for free ended up being a nice perk of doing FR4 too.