While I clearly understand the reasoning behind having the sync symbol in front of those folders, I believe that from a visual stand point of view their presence does more harm than it helps. For one, the aforementioned folders are treated differently and automatically placed at the end of the list. Secondly, the same symbol placed in front of multiple folders kind of tells the viewer that they are all the same - while clearly they aren't. Thirdly, I don't think that anybody has ever used the syncing feature of a specific folder by actually clicking on those symbols.
The idea of this suggestion is to create a stronger & less confusing visual impact when checking messages, so that the important FOLDERS & MESSAGES are evaluated at the first glance. This is where the eye should have no difficulty whatsoever in finding the info that is looking for and move on.
