i had read a similar idea except the guy was using the google affiliate network to drive the traffic to his white label landing pages. i've been looking at the idea but never thought about network to network. was more looking for something similar to the google aff network which has been discontinued recently.
What you just mentioned is actually one of the ways in keeping the offer's origin secret from the network you posting it on - the landing page part. By creating a landing page for the offer, and then submitting the landing page to the network; you make it harder for the network to notice the origin of the offer.