The CHL & AHL have always put development of top end guys at/near the top of the priority list. I still think 98% of CHLers need to play some in the NCAA before going to pro, but this is the other side of the argument which does make sense.
I think we're talking about two different groups of players here.
I fully agree, the majority of *all CHLers* would be best served by further developing in the NCAA. It's a more natural, incremental step, and I'm very curious to see if this change enables more late bloomers. I've never fully believed the whole "the cream will rise, if a player has it he will make it" stance, decisions, timing, circumstance- not all players become the best they can be.
But if we're talking about legitimate prospects- it's very rare that a CHL grad on the NHL track isn't AHL ready at U21. If a player isn't it's a major knock against their viability- hence there being so few NHLer's that touch ECHL ice or play an OA season. Many of them are also ready at U20 but not allowed, as evidenced by their peers (who are allowed based on technicality) succeeding, and by they themselves succeeding during end of year ATO's/ call ups.
So three groups of CHL grads from the status quo
The non-prospects ->Guys who simply aren't pro ready after full junior eligibility.
The fringe prospects -> guys that will have some sort of pro career if they want it, but would be better served using the NCAA to develop before going pro (previously orphaned by the rules and left to sink or swim.)
The legitimate prospects -> guys who are definitely pro ready at U21, with a lot being ready earlier but held back by the CHL/NHL agreement
We've already seen an absolute avalanche of groups A and B going to NCAA after graduating. That will continue, and the NCAA will be stronger for it. The Question, how many of the group B "fringe" guys are ready for the NCAA (what the NCAA will become when it's full of CHL grads)/ too good for the CHL prior to their OA year?
But the battleground is the legitimate prospects- a pool that will likely get larger as more players enter the CHL and maintain their NCAA eligibility. If the CHL/NHL agreement stays as is, the NCAA is going to clean up here. If the CHL adapts- I don't think see much change from what we've seen this year. High end late born's is one area I think the NCAA will make huge gains on regardless. A guy like McKenna that would be a top 3 pick and challenge for an NHL roster spot in his U19 if he were born 3 months earlier has nothing to gain with a 3rd CHL season.