I'd like that there are spacebar and 40s kits, but honestly, regular R4 small space keys are kinda painful to use compared to R4C or even DSA. I know the molds don't exist at SP. It would be amazing if they did tho - I'd be way more of a DCS fan.
Speaking of special row profiles, did you consider DCS R0/R5? SP has molds for those, and NN was what they were last offered in AFAIK.