I understand there won't be much changes from here, but yeah it's a shame it wasn't viable to take the GMK Taiga or GMK Masterpiece approach and simply enforce the sole base kit to have non-English text for the text mods (basically merging German Macro & Mods kit into base). But the market was in a different place at the time those sets ran.
Based on your last kitting image, I'd have explored keeping the Prussian Eagle novelty for R1 at least in either the base or German Macro & Mods kit. It was a nice touch for those who like novelties.
Honestly, the inclusion of novelties would've granted me a lot more incentive to get the German Macro and Mods kit.
I understand the Iron cross novelties on R4 were a bit extra, but I would've tried to keep them, as they would've been a great substitute for "Sys"/"System" keys if I wanted to use the German Mods.
Also I would've preferred the classic simple style of the Iron Cross was used (I have an SVG if you'd like) instead of the spiky version seen, with it scaled to a much smaller size so it's a little more subtle.