Being in the space for so long, I'm always looking for ways to provide new, interesting functionality. To date, identity (IAM) solutions have no insight into the usage of unstructured data. And it would be really cool if they did.
IAM vendors have only recently begun thinking about unstructured data at all. Some have the ability to look across file system permissions and perhaps include rights information in reports along with basic user and group data. I don't think any do a great job of including a view across file system, Sharepoint, SQL Server, and Exchange Public Folders. But regardless of platform, the capability seems to stop at reporting on rights as they exist at some point in time.
The next logical step would be to watch user activity and be able to provide recommendations and reporting on usage along with permissions. Then, you could make better decisions. Think about this: IAM gives department managers the ability to manage security groups. Maybe they know what the group should access. And maybe they have some idea of what users should be in the group. But, there's no easy way to see which members of the group have exercised those rights and actually accessed the resources in question. Or even whether those resources are actually still relevant. (Have they been accessed? By who? How does that affect the concept of 'least privilege'?)
I'd love to hear your thoughts.
BTW, this isn't purely rhetorical. But, you'll have to be patient if you want more details. ;)