This is frequently occurring need and tension:
When selecting a related entity in the dropdown search select dialog of a to-one relation (e.g. pinned field) the suggested items only show Name field, not Public I’d. This results in confusion if entities have similar names.
I remember that in other dialogs of Fibery vieuws the dropdown select list does show ID, so that could be applied similarly to the to-one relation field dialog.
Sorry I’m posting this from my phone, no screenshot but Im sure others agree with this being an issue?