This sounds good to me, too.

Oh yes.... going through the motions of creating a future campaign and then deleteing it does not make any sense.

Agreed.

I always thought, this something that could be already done, but just discovered that you cannot.

Totally agree. While it is perhaps a minimal issue, it is confusing that there is a pop-up upon exiting an incomplete campaign with a 'Discard Draft' button that does nothing.

Yes, I've discovered this issue today also. We set up a SMS campaign & saved it as a draft. We then decided not to go through with this SMS campaign but unfortunately, we can't delete/remove it. So it's annoyingly just sitting there now

I encountered this today as well, please include this feature so we can tidy up our SMS Campaigns list