I can see dropping the bayonet drills and adding zigzag sprint drills, especially if they are doing it with a full load and carrying weapon(s). But not dropping the 5 mile runs. Long distance running is very important to cardio and cardio is what enables your body to deal with exertion in extreme heat.
I dunno, it sounds more realistic in some ways, but I think they should add hill drills in the mix,
Especially with Afghanistan, mountain climing always makes your legs strong, if you can sprint up a LONG hill, yer in shape!
Just because we haven't done it in years doesn't mean it won't ever be needed again. Here are two accounts of what one British unit did a few years ago in Iraq, after running out of ammo:
http://www.thesun.co.uk/sol/homepage/news/article88661.ece
http://www.tactical-life.com/online/tactical-knives/bayonet-charge/?right=related
Scouts Out! Cavalry Ho!