I would rather have a Warning, that I can apply knowledge about the Target Audiences limitations (by eye), rather than suppress them and later forget that was there.
Set and
Forget
Can't count how many times that one has come back to haunt.
(Some settings I made to Calibre were don 5 years ago...Do I remember all of them?
)
I would rather be nagged every delete, than lose a lot of effort with one wrong click.
