What I meant is that each level of membership can have a default WordPress role specified. For example:
Basic Membership Level – Subscriber
Silver Membership Level – Editor
Gold Membership Level – Admin
Now if a member registers for “Silver Membership” then his role will be automatically set to “Editor”. If someone subscribes to “Gold Membership” then his role will be set to “Admin”.
Now can’t your other plugin/script manage the display since the members role has been set correctly when they signed up?