Alright, if someone were so kind to create a plugin that entails the following, you would be a huge help!
1. Categories (posts within the category) would be visible to only users of user roles with permission. For example... only admins can read Category A, admins and editors can read Category B, and all users may read posts from Category C.
2. It would work along side Role Manager, that way you can create as many roles as you want, thus ultimately creating user groups and reading permissions for each group.
This would be ideal for blogs that have paid subscribers, so if a subscriber fails to pay on month you can place the user from "Subscriber" to the custom role, "Suspended Subscriber" and they can only see public categories.
Thank you so much!