I just replaced the soma cages I was using with XL mks cages. I also switched out the crapy nylon straps with leather ones ( I think, could be fake). What a difference. Foot fits better, and I can tighten the straps better. Much easier to skid. Not as good as clipless, but a whole lot better.
So I guess what I'm saying is.... If you got big feet, (i have size 13) I would learn to deal with the toe overlap...
-ray