It needs the feature you have on the 1D4Squibby. Do you have any theory as to why it's limited to 1/250? For the life of me I can't figure it out. I can't imagine that there are technical barriers. Seems so, I don't know, ridiculous?
Granted, this won't be my go-to camera sports camera. I got the 5D3 for sidelines shots, some portraiture that I do, and for UW, so it probably won't matter to me.