How about an actual Hide and Seek game mode?

Should be easy enough. Take Dominion map, disable capturing, and limit the killing of seekers. For example, autoing is disabled by hiders even if they have an item like frozen mallet. If the next auto by a hider will slow due to passives, it is allowed (This works for ashe too). All items that don't provide movement speed or defense are disabled, or there are like 15 special items selected for the hiders in the game mode that they can use and only use those 15 or so. All hiders have a never ending Zilean ult buff on them so instead of being forced to recall, they respawn after 4 seconds with full health. After not dealing damage for 1-5 seconds, they can do an uncancelable recall and shop. Hiders start with 0 gold, are automatically teleported out of base if they don't leave it after 5 seconds of the game starting, have a built-in grace period making them immune to all damage for 15 seconds upon leaving base, and can buy one item each death for free. They don't gain gold passively and after 4 deaths, they may buy two items instead of one. Upon losing all 5 lives they will then be unable to leave spawn. They all start with Boots of Swiftness Enchantment:Distortion, 2 health pots, and 1 mana pot. After 2-3 deaths this will be upgradable to a Crystalline Flask. Seekers are allowed to get any items they want and all stealths longer than 3 seconds will run out after 3 seconds. This includes Teemo and Evelyn.