Thank you everyone for the feedback so far!
As for icon bottom row, I feel the set stays more classy and timeless with it being text for now - I will be open for feedback though!
As for accents, that idea did cross my mind, but at the same time it feels like there are a lot of compatible options as U9 is so popular - 9009 or any other classic colorway.

N9 left, U9 right. It might not be coupled with N9, but still CR is pretty close if it's legends (N9 can look like CR depending on lighting). I will keep it in mind though and perhaps offer an accent kit or include in the base (depending on quote from GMK)
As for the reverse color way, hmm...