Giving Supports more agency without giving them more damage

The role of the support is to bolster or protect their team mates, but this puts them at the mercy of them not being garbage. No matter how hard you support you can only bring the horse to water, you can't drink the water for the horse, otherwise you defeat the purpose of the role which makes it interesting in the first place.

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This is fine, in the vacuum of a team fight, but there is more to LoL than team fights.

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Here's a thought experiment, how about supports are buffed in their ability to take and hold objectives: late game wave clearing, split pushing, turrets, warding. What if the support was transformed to a Strategist or Leader that directs the flow of the team, they just don't hold the cannons. When a role is declining the focus is to buff battle efficiency as if it's the only area that exists in the game.

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Late Game Waveclear & Split pushing There's already support items that execute minions, why not take it a step further and have it clear multiple minions the more it is upgraded.

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Turrets Has the ability to topple structures easy, but so could anyone if more of their abilities worked on turrets. Those somebodies should be traditional supports. Alistar could ram Turrets the same way Rift Herald does, exchanging HP for objective damage drawing Turret aggro.

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Wards Add additional effects to these bland items, like effects that happen when they're placed, discovered or destroyed. Wards that act like flower bombs when destroyed, maybe even do damage, turn wards into traps; taunt ward, slow ward, bomb ward, smite ward, teleport ward, turret ward, minion wards. How about wards that remove minion or tower vision, how about wards that convert enemy minions. Some of these already exist in rotating game modes. Offense / Defense / Recon / Boons

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Take these thought experiments with a grain of salt, the main idea is that there are alternate avenues to buffing roles than simply combat. In the spirit of science any dissent will be sent to jail or Florida.

http://ddragon.leagueoflegends.com/cdn/img/champion/splash/Heimerdinger_0.jpg

Edit:

Expanding on Support Waveclear

https://i.gyazo.com/afc93ada691ef61d84f9e55552f67c3c.png

Deters roles exploiting by only being effective mid-late and uses a support only build path. Other roles will be able to wave clear with their standard builds by this time anyway which makes it irrelevant for exploitation by then.