Hide field data once role is taken away from user

Ok, this might be a little hard to explain but i think it is something that should be possible and should be part of the core function of this module.

Module works great and has such a good application.

I am using this module to build a subscriptions directory site, where people with a certain role, can post a profile, and there are different levels of subscription where if you have a "premium" role, then you can use more fields.

Quite simple to setup you would think.

But what if a user wants to downgrade their subscription and have less access to the fields?

easy done, but I need a way to hide the data that they have already put in from other users AND take away access to edit that field.

I hope you understand what i mean and hope someone has done this and can help!