It would be good to provide the capability to add/remove items on the fly while creating a new thing thru custom state. I know you can do add with plus item but there is no remove item and the workaround seems to crash the browser.
Right now when you create a new thing, you have to create it first and them update it by adding/removing items directly from the database.
It would be good to do all this one shot: create a list of items and then create a new things by adding the list the list of items.
Does someone have a better way to do this?