Love it =3

I guess in "edit profile" there'd be a "profile gallery" with one field for image link and an image upload button, and bellow that is a "+" button to add more fields.

Or another way:
One field to add a note id that contains the images you want and that's it, and adds all images from that note. Also, if someone wants, there'd be a "+" button below that which ads another field for a other note ID, which changes the presentation to showcase each ID added as an album in the end (with a tick option to showcase all images as instead of albums). 

 Good ideas. I was thinking both settings and via UI - either single or bulk image upload. Like the idea of importing from notes too. 

All depends on what is feasible and doesn’t kill performance.