I'd like to point out a minor problem in the core and Nordeuk kits regarding ISO support.
As the kits stand now, UK ISO is supposed to be part of Nordeuk, but the R3 keys '@ #~ (used exclusively by the UK English national layout) are in the core kit. Those two keys should be moved to the Nordeuk kit, and replaced in the core kit by a single R3 \| key, to offer complete US ISO support (the R4 \| key is used both in the US English layout and the UK English layout, and therefore should remain in the core kit).
HTH!