I thought that redirecting to a specific folder based on user level is integrated into SA2. Your documentation is somehow confusing.
I mean where is the clue to add such detaled rules and not having the possibility to add a specific success page too?
Adding the redirect session code to the success page by hand isn't that big problem, but it took me again too much time to find out that it's not integrated in the extension.
I guess that some concepts from your side are not realized in way the customer thinks. Or maybe how I'm thinking ... :p