Possible Hunger Games

So i had an idea. I've been trying to come up with ways that we could incorporate the gulliver mod into a hunger games like event, but so far i'm a little short on ideas. I've considered the possibility that we could make tinies team with players, and use them as scouts, or maybe have potions of ensmalling as pickups that you could find in the environment, so you could spy on your enemies. I'm still thinking of a way to tie in the giants with the game. Anyone else have any ideas? Perhaps we could have a team of giants and a team of tinies, but scattered across the map are incredibly overpowered items for the tinies to fight back with?

I was thinking that maybe scattered throughout the map are /doublesize (or smaller increases in size if possible) command blocks that are one use only, so that they could serve as a sort of powerup for players to get and slowly get more powerful. It would sort of make it a deadly race, where players are trying to get to the biggest size before the others, killing the others while they do so and are distracted too.

Either that, or potions of enbiggening could work in much the same way as you just said there, as it wouldnt be too overpowered if they can get to a building and hide till it wears off for the other player. That, and two players can team up this way, one going embiggened while the other heads in the building to try and drive them out, right into the giant teamate.

I think our problem with introducing potions of embiggening is that we would need a way to make sure that people didn't grab more than one, because we don't want someone hogging a bunch of potions so they would just be big indefinitely.

Easy, I can do that with /pulse, to create a redstone block, activating a piston that blocks you from pressing the button =] I can also set the time it stays there, effectively creating a 'cooldown'

That'll work. I'm wondering, if we want to make this like hunger games, should we have some form of Cornucopia? if not, I can just as easily make just an open courtyard-like area, and we can have all players branch off from there. I feel like mostly this will be in a forest area, but we can look into different biomes to use.

So i made a base for the tiny hunger games. So far, i'm thinking of making this for up to eight players. There's a large quantity of tall grass and flowers around the main ring. Then, in certain areas very close to the ring, there are hidden chests, each with a single useful item in them. An iron sword, stone sword, iron chestplate, and iron helmet. These are hidden and different in terms of difficulty finding them. So the harder it is to find one, the better the reward. Everyone starts with a wooden sword and pick. I'm now wondering how to decide what to have as a wait time before attacking, and how to incorporate size changing in this.