CCM has been met with mixed opinion throughout multiple forums. For me, I personally like the idea and can't wait to sit down for a few hours with a full copy of the game. I think the groups that are most critical of this mode are the online franchise people. Personally, I don't enjoy playing people online, so this really doesn't effect me.
What I find most exciting about this mode is that there is a RPG element to the game that will allow me to "develop/build" players as I see fit with the XP that is earned. Plus, depending on the system that I choose to run, it seems that ratings will matter more as well. The depth of the mode is there as well. If I get fired, I can continue in the same CCM and sign with a new team. I can be awarded a contract extension, etc.
I think this is going to be a mode that continues to grow and evolve over the years to give us a franchise mode that we have all wanted, and expected, over the last several years.