That name is just dumb. It will only confuse people in the long run with the host of other possible classifications for these objects. Not only that, but they are solar-system centric, which is really short-sighted considering that we are on the verge of discovering smaller rocky planets around other starts. They should've stuck with "planet", "dwarf planet", and "asteroid". It is a good classification by size/mass and orbital properties.
Btw, they really need to resolve the whole Pluto/Charon thing. It really is a binary as the barycenter of the two bodies lies outside either one. They are really two binary dwarf planets.