Just an idea that I think we could in handy, now that Plex Home exists it would be nice to be able to setup a "Guest" account that doesn't modify its own watch/unwatch status.
My real world case that made me think of this:
If a guest is at your house and wants to watch something on your server ideally they could go to a "see all" view account, also without the counters showing how many items are unwatched since unwatched doesn't matter in this case.