I think that's a shame. I realize that several bodies in our solar system have been found that are as big as Pluto. But I don't like upsetting the symmetry of the neighborhood.
Downgrade Pluto to "minor planet," if you must, along with Ceres and Pallas and the others in the so-called Asteroid Belt. But keep the name prominent. Maybe the trans-Neptunian minor planets could be referred to as Pluto & Co.