It really only took us one session to figure out the major mechanical systems in the gameplay, and a few we are still learning about. The major component remains the role playing experience which is the same, no matter which dice you throw to decide outcomes of situations.
I think Hasbro will soon realize that while the social impact of the name D&D is deep, the stickiness of the system is much lower than they gambled on. It's unlikely that any of my member group will soon buy anything new from them.