You're right, plan to the far left is simply the same plan, but with larger curves. Doesn't address how to enter the plan, or how it should fit in a given space. The middle left plan has some advantges. I left remnants of the wye in for comparison/reference. The middle right plan shows how much room you might need, if you separate the loops of the CM main body, with an aisle. I assume that you would have another aisle around one of the peninsulas, as I have a strong dislike of duck unders. The plan on the right is a variation, if more space was available.