i'm not sure but I think the control keys on row 4 in base set should be "ctrl" instead of "control" but I guess this just a temporary mockup.
about ISO issue, it always happen to keyset group buy.
In terms of the GB/IC leaders opinion, they need to make it cheapest for ANSI users as they're the majority users.
GB leaders always tried to reduce everything that majority users didn't need, and ISO keys is one of those thing.
ISO users(Minority ) - Why you guys can't pay a little bit more for us.
ANSI users(Majority) - Why do we have to pay for something that we never use.
if ISO users are 20% of group buy, 120 people have to pay at least $5 for the keys that they never use.
that's how you waste $600 for the useless keycaps.
but when you're talking about Winkeyless kit, everyone have a chance to use it.
everyone have a chance to get a Winkeyless keyboard, might be not now but in the future... no one know.
but there's no way that ANSI users gonna have any chance to use ISO keys.
are you fine with a keycap set without WKL kit aren't you?
if you have a keycap set without WKL kit when you got a WKL keyboard, your whole set is useless.
in terms of ISO users you can adapt, because there's no ISO-Only custom keyboard if I remember correctly.