While "Dueling Dumbos" sounded a bit odd to me at first, I have to admit that the addition of a second Dumbo the Flying Elephant ride was done perfectly by Disney (not sure why I ever doubted that it would be.....).
What makes the new experience so much better is the "line but not a line" that you wait in before hand. Now you get a "ticket" to ride, and you wait until your ticket shows that you are ready before you go to get on the ride. This allows you to experience several interactive items under the big top that shrinks the feeling of your wait time, which is what Disney continues to perfect.