VDI application/user drives

OK, about 3 years ago I came up with this idea and should have run with it then but never got around to it so here it is. So in vmware esx, you can add disk drives on the fly, this is key to what I will call VDI application/user drives

In VDM you can have linked clones, where a base image is used to create child images. The base image is shared so Windows is only loaded once, then you create a differential which records changes to that base image. If an application is installed then that data is saved in the differential and not the base etc...

So I think each user should have there own drive, through extensive folder redirection etc. all user session data would be saved to this location, the users actualdocuments etc. shoudl still be saved to an external NAS or other location seperate from this share, which is more or less profile information. All applications would also be installed via a thinapp environment to there own shares as well.

As users connect to desktops there user drive would be connected and the application drives which are used. Keep in mind these would be most likly not "drive letters" but folder locations so you are not limited to a small number of applications or conflicts with other mapped drives. Applications could be optimized to operate in this shared environment. ]

Seems like there is something to using the SAN to attach to applications etc, instead of copying accross the network just to write to the san etc.

Does this make any sense at all?