As far as the feature goes I think it's very stupid. Player movement has never been a staple of the game like it is in pro sports so seeing a different jersey on a guy like RG3 when we've had create-a-player for like 20 years now isn't some perk that makes this year's game much more attractive.
But the developers need to add something that they can market and this stupid gimmick is it. Oh well.
I'd prefer being able to sim a season in under two hours but I guess putting Tim Tebow on Ball State is much more fun for the average consumer.