I would not have a problem with them switching roles in fact I thought it was a great idea when Lane first mentioned it. But I have spoken to some people who said that if they spent money to see the OC and were envisioning Lane doing Madison and he wasn't doing that role, they would be pretty ticked off.
So...everyone is a little different. As of the last time I heard this rumored, the word was that not everyone was wild about the idea of having the actors learn 2 roles with such a short rehearsal schedule. They only have a month to previews.
We'll see what they decide. I, for one, was somewhat disappointed with the casting of supporting roles and thought they could have done better to support the leads but I'm still looking forward to the show.
"Life is a lesson in humility"