Personally I've always been from the school of thought that I want something that looks cool number one, I've never really cared that much for the theme or history etc that inspires a set. I realise that other people are fiercely protective over replicating the OG as precisely as possible, and I think you've got a pretty good compromise between the two here.
This looks great in my opinion, personally would prefer icon only or text + icon mods. I think icon could go well seeing as there are already a lot of 'icons' as sub legends. I realise this is an extremely contentious topic though and a lot of people will disagree/get triggered =S. Just giving my opinion anyway =].
The most important question I had was could you change the R3 backslash/pipe key to something else? I realise different European countries use a variety of different keys/layouts left of return but the only layout I'm familiar with that uses that R3 key is the mac? Maybe 'US ISO'? I'm not asking to have exactly the correct key for the UK layout but just something else, so that EU people that are ok with not buying the NordeUK kit and having exactly the correct legends on those keys could at least have different legends on the keys to the left of return and to the right of left ISO shift if that makes sense? Sorry I've probably done a really terrible job of explaining that! Thanks =]