KOF XIII won't have the option to spectate within rooms or out of them (anyone) because players connect to each other directly, and when one opens a space in which to play another player, it isn't created with that player's connection, but within a server, and that server will only be useful for that, after that, the connection is exclusively pvp between the two. Those that have followed the emulators scene since 2005 onwards know what I'm referring to.