not sure you should say that publicly, you're going to get bombarded with requests for every key possible now )
The only key that would be added would be the one you have mentioned: ^ °
Zambumon - the eater of words.
https://www.massdrop.com/buy/massdrop-x-zambumon-gmk-nautilus-custom-keycap-set/talk/1741381
Anyway, while you are at it, please consider adding support for some nordic languages to the NORde kit as well. Nordic countries are like 60% of NOR_DE anyway. )
Regarding the confusion about the norde kit in the discussion over massdrop, maybe adding some disclaimer about the norde kit content on the main page could help. I know that the keys are very much visible, but people are used to having full norde support in norde sets and thus some note about this not being the case is something to consider.
Second that. I'm using Swedish ISO for the layout, but in this case I'll go for a 60% so I won't lament the passing of the §½ key. Had I been going for a 75%/TKL/full size build, I would probably have thought once or twice about what layout to use so a disclaimer would've been helpful in that case.
Also, on Swedish layouts, the extra symbol on R1 4 is actually the currency symbol ¤. $ is accessed with AltGr. Always thought this weird. It feels like ¤ is a fragment from a time long ago (it's a replacement symbol for when you can't type the correct currency cymbol, if I understand it correctly - I've
never used it). It was used in BASIC on the ancient ABC80, a Swedish computer manufactured between the 70s and 80s. Removing it and replacing it with $ feels like a rational decision.
A suggestion, and a question, though. I noticed that there are in total five keys to cover Nordic layouts. I don't know if it's possible with the printing technique used by GMK, but these are usually rationalized down to only three keys on Scandinavian keyboards: R3 ÄÆØ and ÖØÆ (Swedish and Norwegian layouts use the same placement of the keys, but Danish switch them). If it's possible to print the keys with three characters on the same key, two keys could be "saved" and perhaps used for other missing keys? (As a reference, have a look at the Nordic layout of the Vortex Pok3r RGB here:
https://www.maxgaming.se/gaming-tangentbord/pok3r-rgb-mechanical-keyboard-mx-brown)
Perhaps this has been discussed elsewhere, if so, I apologize for bringing it up again.