Sorry for late reply,
There are 2 options for you Option 1
you can manually create a specific role in config.yml as below and let a user that has editor role create a collection, so that the permissions will apply to it.
He had the brilliant idea to tap into the collections.createcollection and singleton.save.after events. (yes, the naming convention is a little off here)
You could use these events to trigger an auto-update of your config.php.
You could automate the “Option 1” by @ronaldaug that way.