Pay % Affiliate Plugin

I would like to make a recommendation...

Please add the ability to set up the affiliates plugin to payout Percentages (%)...
This make so much more sense and does not restrain someone from
setting up multiple levels in the ProSite Plugin and being able to pay
different rates to members.

I am limited to one payment level now in Pro-sites because of this...
Unless I am missing the boat here, this is much needed in my opinion.
Thanks for taking the time to listen to my rant..
Tim