I'm not sure if Div II is intended to be, or will evolve into, an Xcel track for boys. After all, it is assumed that after Div II that next year you will likely compete Div I (or go to the next level, if ready). So it's not like anyone would stay on the "Div II Track", as Div II is just meant as a stop-gap between the previous level and the next level+full bonuses. So boys still have to train all the same compulsory skills - unlike Girls Xcel, which is much more flexible in skill selection than JO; e.g., a girl could be equivalent to JO L5 on floor and L2 on bars and compete in a pretty wide level called "Silver", etc. But who knows? Maybe larger gyms will get creative and spell out different paths/timeline targets with lower hours who would spend more time in Div II....
I do see the newly created "Junior Development" Optional division as more of a boys Xcel for the older boys (high school) who want to compete, but aren't ready for L9/10. That is structured somewhat more like Xcel, and could theoretically stand alone as a goal for a boy who didn't want to commit (or was unrealistically going to achieve) to pursuing L9/10.
(Again, no special insight here, just trying to analyze with everyone else!)