I too, would lie to see an older Doctor in the future, but, personal anecdotal experiene has shown me that there are quite a few fans of NuWho who can't get into the Classic Who, "Because the Doctor is so old". So, I'm not sure if the General audience for NuWho would accept an older Doctor, we may be stuck with 20-something or early 30-something Doctors for some time to come
(Again, this is anecdotal, not meant to be preseted as fact, so, it may be that my personal experiene doesn't translate to the General Audience)
One Day I hope to be the Man my Cat thinks I am
Where are we going? And why are we in this Handbasket?