I had an idea the other day, Wouldn't it be cool if as an admin, you could bring up a GUI that displayed the screens of other users on your server - so you could watch them. In the past I don't think this could of been done, but with the development of spout. I'm sure we could do it by getting the server to send other players packets to spoutcraft. It's just an idea at the moment, but I wanted to get other peoples thoughts on it.
This is possible already, not as a plugin but in zombe's modpack there is a cheat you can enable where you see what other players see.
I assume this could only view other people in the chunks that you have loaded client side though. Using some sort of free-cam.
Yeah pretty much. I think you're asking for more of a /view <player> and can then see their inventory and everything they do no matter where they are. I would assume if zombe was able to do as much as he did from just the client, a Spout mod would be possible. But then again, I don't know what's all possible with Spout.