3D view is good, but...
... Pluto is still better viewed as a rather large and unspectacular comet that fails to get close enough to the Sun to boil properly.
It's a KBO. Always has been (just at first, Gerald Kuiper hadn't invented the concept).
I can't accept that dozens of KBO's might be promoted to "planet" status if the criteria are made general enough to let Pluto in. Just as Ceres will always be the first-discovered Asteroid, so Pluto will always be the first-discovered KBO.
Unlike Ceres, it isn't the biggest in its class...
(The priority of discovery, btw, refers to the assumption that only Human observations matter. Who knows what creatures on planets around other stars might have discovered aeons ago?)