A stepped Caps Lock is curiously missing from the base kit. JTK has the tooling for that keycap (as seen in previous JTK sets), so I guess you forgot to include it?
Are you planning for your set to support 40% boards? If not, you should remove the 1.5u and 1.75u space keys. But good on you for including 3u.
The mod-colored R1 1u \| key can be removed (see
here).
The second 1u Ctrl and Fn keys can also be considered superfluous:
- 2× 1u Ctrl — Used on OG 1800 keyboards, but not seen in modern 1800/CP layouts. Can be removed if there's no plan to support 40% boards (and if there is, it should be in the 40s kit instead; but even this is debatable as not many 40s use 2× 1u Ctrl).
- 2× 1u Fn — The only use that I can think of outside of 40% boards is as Fn2 on M60-A–like HHKB layouts. But I don't think that's common enough to warrant including this key. It can also be removed or moved to a 40s kit (although for 40s it'd be better to have Lower and Raise instead of 2× Fn).
- 2× 1u Alt — It's fine to keep this because of the 2× 1.5u Code keys.
The Delete icon seems unnecessarily complicated. If Backspace is a leftwards
harpoon arrow with barb downwards (
↽), why not use the same arrow, just rightwards (
⇁), for Delete?
I'm not a huge fan of the Shift and Caps icons either, but I know how hard it is to come up with a good design for those that's different to what we're used to seeing.