New class suggestions will basically never be implemented and often create a chain of slightly more knowledgeable players pointing out every flaw. They see frequent bumping because everyone is eager to criticize a dumb suggestion. Other suggestions that can be made by any level of player often never see much attention because the class suggestion is too busy getting piled on. This is also a problem with the game itself, since it doesn't explain basic mechanics to the player very well and even misleads them a lot. TL;DR: New class suggestions are almost always made by people who are relatively new to the game, causing them to be frequently bumped with criticism and clogging up the category.