Sounds like a pipe dream to me honestly.
I understand the point, but you said the sponsor is doing nothing..??
What?
It takes time and costs money to come up with the content, to create the programs, to market the programs and get affiliates on board to promote them.
What you want is a sponsor to do everything for you, on top of what they already have to do. You honestly think a sponsor can do what your asking for 100-400 affiliates, PER program?
If your job is to make money from promoting sponsors, then it's up to you to purchase the rights to place your domain on the content your promoting in hopes of making money. In essence, you want to franchise a sponsor. That comes with up front fees for licensing etc.
So, if you want to franchise a sponsor, hire a staff of your own, buy some licensing rights to brand a sponsors content and get busy.
