Possible Strategy

Faction Strength and Weaknesses.
Demacia: Has a ton of front-liners. Has two short ranged AD carries and Lux for ranged champions, however. Break the front line and they're screwed. Good luck with that: Vayne and Quinn are both good duelists. FYI you aren't going to 1v1 Vayne post level 6 unless you're ahead of her.
Noxus: Has a wide variety of casters but only one AD carry. Then again, it's Draven, so...
Ionia: Equal balance between casters and front liners, but not excessively good at either.
Piltover: We have poke and that's about it.

Therefore, we should probably run poke-oriented teams.

Possible team comps:
Generic: Jayce top, Vi jungle, Ezreal/Corki/Caitlyn carry, Blitzcrank support, Orianna mid.
Poke #1: Blitzcrank Jungle, Ziggs mid, Jayce top, Ezreal/Caitlyn carry, Support Orianna.
Reasoning: Blitzcrank can jungle fairly well. Ziggs, Jayce, and the AD provide poking power, while Orianna doesn't need farm to AoE cc people. We can NOT just engage fights unless we've poked them down first. If they try to hard engage, we can Jayce gate + Orianna speed boost away, while still poking them.

POKE.