Pro Sites with Affiliates plugin

When I signed up, I was under the impression that the Affiliates plugin was up to date enough to work with Pro Sites (since it says "works perfectly" with Pro Sites). However, it doesn't work with differently level types (like Basic, Pro, Pro Plus). You can only do a set amount. I hear this is being updated soon. This is what I am wondering:

1) When will the update come?
2) What would it take to simply add a percentage option? This would solve all my problems.
3) Would you suggest a recurring affilate payment option? It seems like this would be really enticing for affiliates, but may not be the best business option. What do you suggest?