The problem with this situation is you WON'T get a NG version, however CAS is implemented will be how it stays for the game's cycle on this generation of consoles. Comparing NCAA2003 to NCAA2009, the CAS system was virtually untouched for six years.
I can only think of a few changes that were made to CAS in that timespan: they straightened the Denver Broncos style pants stripe, allowed you to name your primary and secondary colors (for spring game) and made all the updated school logos (non-generic) available to use; that's IT. Whatever schools you created in 09, you could go back and create almost identically in 03.
I may be missing a few minor upgrades but there was never a major overhaul/upgrade done to CAS on old gen and if/when it's added the same thing will happen for this generation. And any pleas from the community to upgrade it will be met with "presently all of our resources are focused on areas other than CAS" from the devs and "shut up about CAS, it's already in" from the rest of the community.