I think that finding sporting players while also looking for the stupid/crazy "Stuff" >XD...is what will bring the game back...
A tripmine set down, the first of 2 hogs breaks but the second pushes em both over it, wiping all of em out
a Disruptor downing a Banshee that spins into the Valhala Pelican and sent into a further flip frenzy while splatting not only the one who threw said disruptor and the team member who spawned right next to him.
a snipershot hitting a wall yet killing the player 5 metres behind it.
A single player grabbing the flag, dropping the guard, heads out the door as the entire enemy team walks through the same door and gets the flag to the face one by one.
a sticky nade glued to a warthog wheel, explodes sending the warthog up and splats an unsuspecting player walking across the walkway.
A Spike nade Sticks to a players gun barrel...AS THE HOST RESETS...the game reloads and the Nade is permeantly stuck to his guns...and never explodes til he died...5 mins later!
I'm Talking Ye Olde Halo 3 Fails Time here.
Thing is though you can't have the whole Back out and not get banned really due to the scrapping of Halo 3's exp system which dropped you exp for quitting. Something that could be done is a better team balancing system so you don't have one sided teams but that then can be knocked down by groups.
I think they also need to bring back the old Party up setting from previous titles so if you found fighting in that particular team fun or worked well together, those that are entering as a single player or small group can team up with others before the next match.
Another point to be is be respectful to others and you will receive respect...Win or lose I always say GG at the end of the Game because at the end of the day...it's a Game we play.