Apparently there was an Azeroth Auto Pilot addon to help folks level quickly. However, the original addon was abandoned. But, I found that there is a new one called Azeroth Pilot Reloaded on CurseForge that might be of interest to those who are looking for help in leveling alts before the launch of Drgaonflight.
You can check it out here.
Happy leveling all those new characters in preparation for Dragonflight.