Classifying planets should be solely left to the International Astronomical Union. The International Astronomical Union is composed of a panel of Astronauts from different countries. The International Astronomical Union has incorporated a sophisticated way of classifying planets. The International Astronomical Union's criteria for categorizing a planet relys on many factors, including public opinion.
There needs to be an overseeing authority when it comes to these matters, and that authority should be staffed by trained scientists. Lay people just do not have the expertise when it comes to planetary science, and even more, such decisions need to be taken out of politics and away from politicians.
Just as we have time zones set to a standard, we need a standard tool for determining what is or is not a planet. They are the most qualified to do this. Otherwise, we will have many plutos in our future. Standardization is key to progress in the science community.
Yes, these people are the best at what they do, and they know everything that there is to know about space. They will be able to make a good guess at what is out there, and will be able to tell if a planet is actually a planet or something else.
No, classifying planets should be solely left to the International Astronomical Union, because there are other organizations and people that should have a say. A lot of people do not understand why Pluto is no longer a planet, since it was a fine planet when it was a planet. People might not support space programs if they cannot understand what they do and why.