I think this 10K course looks fun... I liked running down to the Convention center on the old course but getting to stay pretty much totally on Disney property will be nice, plus it will be awesome to run in some areas of the park and backstage that I haven't had the chance too... My one concern was that first 2 miles outside of the park helped break-up the large group of people on the old course, the first 1/2 mile was packed... So I think that is why as Davidg83 and Warm Hugs pointed out more corrals will mean less people in each so hopefully it won't be horribly crowded as you enter the park and some of the smaller pathways.