That’s a good point. For the 1.6 release I’ve just hidden the Delete Item button from repeaters with a fixed number of items (min items == max items), and got rid of a bit of padding that was there for the actions bar to fit.
If it’s also set to a fixed number of 1 item, it will also hide the item collapse.
Old:
New:
I don’t have an ETA for 1.6 yet.