FYI i seem to remember YM discovering that excessive path tracks increase file size significantly. YM experimented with smoother payload curves/turns around the time he produced hoodoo, if not immediately afterwards, and found that there is a sensible balance to be found between aesthetics and perminant file size. Deleting multiple path_track's on such corners on a map wide scale hlped reduced the file size by several MB.
current version of my map is about 10 mb, about 2 mb without lighting, and it has about 230 path tracks (and over 100 breakables too ). doesn't look like path tracks are doing anything extra bad to the filesize.
It's quite funny that a large portion of people who are entering are really behind, myself included. Perhaps disciplinary action is in order.