Learning to skate has nothing to do with IJS scores. It's about edges, flow, power, etc.... If you don't have good edges or can't garner enough speed, your jumps will be puny, underrotated, and go no where. Since the IJS was implemented, the quality of skating at the lower levels has decreased (Completely my opinion)! Yes, pre-juvs and juvs are racking up a lot of points but their skating is, for the most part non-existent. If the focus would be more on learning the fundamentals of skating, a lot of the habits these young kids are making wouldn't exist. It makes no sense at all for a kid to do a double lutz, double loop combination in a program if the first jump is underrotated, tiny, no power, etc.... They are just tacking on a double loop for more points. What is that teaching the kid?
Sorry if I seem harsh - this question just caught me on a bad day! Basically, what will separate the scores in juv now will be positive GOE's and of course the infamous double axel. Therefore, I think it's a good change.