I guess the problem is that fell shoes need to be very snug fitting. An anatomical fit is all very well in a casual shoe (my several beloved pairs of vivo barefoot shoes are the most comfortable I have ever worn, simply because there is plenty of width in the toe box) or in a road running shoe when used on level surfaces. Fell shoes need to be very stable because of uneven ground and contouring - I believe (but would be happy to be proved wrong) that a shoe with too much width at the toes would not be very stable on the foot. Unless some genius can come up with a shoe design that is both roomy and stable, I'd be happy with just a little bit more width so I can squeeze my flippers into a snug size 10 shoe rather than squeezing my flippers into a snug size 11 and end up with oodles of space in from of my toes. To put it simply, I want 'performance last' inov-8 shoes with an 'endurance/comfort last' - which shouldn't be too difficult since they just need to combine two things they already produce.