I honestly think this could make people hate kits even more. At the very least they introduce stuff that I would consider new. To suddenly lock recolors that were originally free update content to paid kits would feel very scummy to me.
I will admit some people don't care about BB. I've even seen some complaints about getting free update content in general because of computer specs (boggles my mind).
I would not even consider myself what I have come to determine is an avid builder, but I do spend a solid third of my game time there and even upload some renovations to the gallery. I cannot say I want recolors locked behind kits or even necessarily a one off recolor kit.