I think that 2003 UB313 should be known as the 10th Planet. I guess there does need to be a better definition of what size and shape defines a planet rather than a minor planet or asteroid.
Removing Pluto from planet status seems a bit silly to me. Every astronomy book I own and have read defines it as being a planet and I can't see why it shouldn't be. I really fail to see much credit in the argument for removing it from being a planet. I think the small number of people that don't want it to be kown as a planet seem to make a lot of noise and get very emotional about it and that blows the debate out of proportion, but that's fine, everyone's entitled their own opinion.
