THE ULTIMATE TEAM COMP
This is in my opinion the best team comp possible. If a group of 5 people were to practice on a weekly basis, each specialise in one of the champs below and then go Ranked. They could probably climb to Plat even if they each individually only play at the Silver level.
Top lane: 
Mid lane: 
JG: 
ADC: 
Support: 
You'll have to figure out a few back-up picks in case some of the above gets picked or banned. In games where you're worried about counter juggling, just switch out Amumu with 
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Now why does this work?
You have insane team fights potential. Malphite and Amumu can easily start fights, and then Vlad and MF just move in destroy everything AOE style. One Vlad Ultimate cast over the enemy team + an MF Ultimate will just completely destroy them.
I really don't see how they can out-team fight you. Also, Vladimir is extremely OP right now as a damage-dealing AOE tank (he's tanky AND he deals AOE damage) and late game he's easily equal to 2 other champs if not behind. As a Vlad main, I'm confident that he can hold his own in lane against any of of the other mainstream Mid picks right now (just have to know how to vary his play style).
The Jax is in there to either help burst down/tank in these team fights, or to serve as a back up split pusher in situations where this is required. The rest of the 4 players are relatively unbeatable in team fights. Jax can also prevent split pushes because he's such an insane duelist.
This way... if the enemy team fights, they lose. If they split push, they're unlikely to succeed because you have Jax, one of the best duelists in the game.
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What do you think?
Ultimate team comp?
is one of the best wave-clearer in the whole game. A split pushing
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) where you have 2 damage dealers with everyone else providing utility. In that example comp for example, if