Riot: Ever thought of an trap ability that enforced dashes?

How many of you remember those dash floor panels in Pokémon that forced you to move in a particular pattern? They were annoying right? Now, let me explain how something like this could be implemented into league of legends.

First off, how many weebs watch Soul Eater and remember the first fight between Medusa and Professor Stein where she would propel herself around the battlefield through directional arrows she placed on the floor? I'd place a video of it, but I can only find AMV's for it and I don't want people getting cringed by it.

Anyway, dash traps: the basics of this ability is that you place an arrow down in a specific location and direction, and when an enemy walks through it they are forcibly thrown in the direction the arrow is pointing.

http://images.memes.com/meme/674487

The arrows themselves would not do any damage by themselves, nor would they allow enemies to bypass terrain (at least my rendition of the arrows wouldn't). Their damage would be conditional based on whether they forced someone to hit a wall. Here's an representation of the result.

http://www.toonopedia.com/coyote.jpg

But not only could you slam people into walls, but you can cut off someone's escape by having them run into an arrow facing the opposite of their intended direction! Obviously this would only be a reliable strategy if they were stealthed, but making these stealthed might be cancerous.

One other (and probably less healthy way) is to make it so the traps don't work on the enemy at all, but instead work for your team and can pass through terrain (this is unhealthy because it gives an unintended power to champions who are kept in check by a lack of a specific power. Kinda the same reason why group stealth hasn't been implemented yet).

An arrow would only effect one champion and disappear after its active (obviously). But unlike Taliyah's forced knock up, it acts as a trap favors planning ahead.

So, thoughts on this insane idea?