If Halo had a good JiP system, it could be of great benefit. Nothing pissed me off more way back when than when I was playing a good game of team slayer, having a good time, when 3 people on the other team quit. Halo then turns into a game of hide and seek. And it's boring as hell.
4's JiP could use a lot of work, but I can't even think of a super fair system at the moment. Maybe like mentioned before where JiP won't throw you into a match unless theres more than a certain amount of time left. --- Royal with Cheese. What do they call a Big Mac? Big Mac's a Big Mac, but they call it Le Big Mac.
I love JIP. This is probably because I was on the wrong end of many mass quitting/lagout events throughout 3 and Reach. It sucks being the only guy left on my team, with 8 people constantly hunting me down and spawnkilling. It caused me to stop playing Invasion unless I had a full team of friends. JIP solves this problem unless, of course, we're put into a lopsided game or one that's about to end. People have already pointed out that JIP should only put you into games that have a good amount of time left. However, I have joined losing games and come back to win plenty of times. Strangely, there's some glitch where you can't JIP on DLC maps most of the time. --- "The most important thing is to never stop questioning." -Albert Einstein. Xbox Live: AlteraLateralus