Savable camera positions

I've had a look, and seen lots of people grumbling about various camera-related issues, but not noticed anyone suggesting this. I'm sure it has been suggested before, but I'm going to resuggest it anyway. A lot of the issues with moving cameras whilst editing objects and the like could be solved with the ability so save a camera position. So, you get the camera where you want it, you save it to one of several 'save' positions, you can then look around/do other stuff but then instantly get the camera back where you had it before by selecting your saved position.

Any potential abuse for spying and the like could be solved by making the saved positions expire if you move more than X meters away from them.

Surely must be easy to implement, and would make life much easier..

Actually, I have suggested it several times before

Which means, yes, I endorse this product and/or service.