they’re focusing on combat right now, I just lvled all 3 gatherers to 70 and didnt have any issues selecting the grid i wanted or making one real quick. your idea wont work because there are many different areas for the same level, and different grids with different movement types made by different people for different purposes, its not standardized and what might work for one person might not for another depending on their level/gear/what they’re doing.
at the low level you’re at just do something else on your computer while you leave it gathering in an area thats your level. once you reach 40-50 you can start leaving it overnight with some 10-15 hours scenarios spanning 5-10 levels.