support multi-valued image-fields

in my use case a user creates a node with some data including a multivalued (unlimited...) imagefield to upload some images at once. afterwards i want to display all those images e.g. on a map using gps data extruded by this module.

so it would be fantastic if besides the existing feature to assign an exif-field to an image field (in case there are more than one) it would be possible to support multi-valued-imagefields. i have the hope that this could be pretty simple. you can already set up the exif-field to be multi-valued too. upon handling the image(s) to read the exif data there would just be a need to do this in a loop on all images and create the appropriate exif-field-data. maybe updating is a little harder (I'm not yet deep into D8) because it would have to support deleting single items from the multi-valued-imagefield but maybe it's just setting up an updated entity and saving it?! https://api.drupal.org/api/drupal/core%21lib%21Drupal%21Core%21Entity%21...