Well said, Mike.
Many years ago, I had a VP who wanted exactly this. I explained the conquences to them, and she insisted that I do it anyway. After putting in the speed dial, I sent the VP an email, stating that the work was completed, and reminding her of the dangers of doing this.
Six months later, I sent a copy of this email to the VP, when a VM message was deleted by someone who had borrowed her office. The individual thought that they were retrieving their own VM and did not pay enough attention to what they were doing.
The VM speed dial was removed that same day, again at the request of the VP.
Susan
"An education isn't how much you have committed to memory, or even how much you know. It's being able to differentiate between what you do know and what you don't."
- Anatole France