We’ll be offering this in the next update of our affiliate backend as well.
I’ve been on both the affiliate side and the affiliate program side and I have to admit that I really like the idea of having my banners update automatically, as long as the affiliate has been “warned” beforehand … that way they can at least prepare themselves for the change.
It’s a great way to implement dynamic content/banners on your site without going through the trouble of manually changing the code.
-Justin