Currently if you have a collection of locations and you want to add it to a map you need to go Collections -> select colection -> pick location -> insert and back to the map editor, and do everything again for each location you want to add.

If i have many locations that i collected i would like to add them in bulk to my map. Just select many and insert many.

Extra:

It would also be clever to just generate a map out of a collection you have, and keep it sync. But maybe that's anther feature.