How about extending KI`s livespan with TF2 style cosmetics market?

I know microtransactions are questionable marketing strategies, personally I never understood or was into this phenomenon, but they just work, you know?

Many games with cosmetics market have enormous live span and popularity, just look at CS:GO or TF2. Maybe this type of thing would work for KI too? People are attracted to this kind of stuff like flies to… ekhm… Honey.