Completely agree
I think the casting people have been more right than wrong in their selection (going back to 1969 - who would have picked Jon Pertwee to replace Pat Troughton? Two totally different styles yet worked perfectly).
As for the next Doctor..... I wish Richard Wilson was younger (he would have been perfect). PP's choice of John Hannah is inspired and I think he'd be wonderful.
It would never ever happen - but what about Rupert Penry-Jones?