You are Sigma designer.
You are about to release in few months the very first FF foveon mirrorless camera.
You know the disadvantages of Foveon technology ( huge weakness on video capture, severe weakness on still photography on high iso)
What you think to keep your clients happy ?
You release a small not foveon body with same mount and same sensor size to be part of a set with upcoming FF Foveon camera....FP will do whatever Foveon could not , body size is not that big to fit in your bag and suddensly you have a solution capable of everything.