I became interested in CO when it went to 141.25 mags, simply because it placed capacity between Production and Open. I liked the different challenges that offered to stage planning. Now that (IMO unfortunately) Production is at 15, bringing CO to that same number once again would crunch the two together again.
Oh, well.
As to LO at Major, I wonder how the slide mounted dot longevity might suffer. But that would be a choice to make.