[SSJKarma]

if i get your point right...

you want to have a special feature that tells you if the game is closed already or if it is open ofr people to join !

well... adding that wouldn't change anything to it. you know why ?

because when the game is closed by the host, the game disappear fromt he list of joinable games.
so if ya joined one and then it told you it was shut, that was because the person shut it after you joined his game !


the other way i see it... by what you said...
well this wouldn't be possible, as the person hosting the match is the one that has created it, thus becoming the server for all others, so if he quits, then its normal law that the server is cut off, if so then all players are cut off as well.

so no, there is no way for you to stay in a game if the hoster has left it !