What is a perfect affiliate network?

Hello,

In the coming months, my team plans to launch an affiliate network. We plan to make it the best around, and it will be the best around. We just want to do a small survey and see what the affiliate's want most. If your an active affiliate, then please list what parts of an affiliate network attract you the most, and would like to see improvement in. If you want an affiliate network to have a new feature, what would it be?

For those who will reply, thank you for your time and help.

Regards,
Martin