I tend to agree. However, based on some business needs, I had to make something like this already. I expect this to be broken in all sorts of ways once we get forced to full on Kinetic. The underlying BPM is messy to say the least. But, it does what I need, and may be able to edit days out like you need. The problem is that you have to check the part out to an ECO then check it back in. These BPMs automate all that stuff. It’s the dirty way around the DMT.
FWIW Check out “Edit Any Op”, here: