User level security by view or boolean operand.

We want to let our partners/resellers ( we are a distributor and we have resellers ) to have access the CRM database. Today it is possible to limit the viewing of specific Modules such as Leads, Products, Accounts etc. Within those that are allowed it is then possible to turn off specific fields such as account name, phone number etc. This is OK as an all or nothing approach but:

What we want to do is create a "view" or use boolean operands that will limit for example Accounts or Leads to a specific State or range of States perhaps separated by commas. This could be set between assigning Roles (Module level permissions) and Field Level Security under Admin Settings.

Is this already possible by another method??