Lets talk about halting the "Mobility Meta"

As all of you know, we've had a pretty large period of time with every new champ having a dash of some sort. The mobility meta is at hand, and all who are left without are in many cases outclassed. So lets talk about the ways that we can fix such things. I'll start with an idea- Lets make slows more impactful by reducing the range of dashes/blinks for champs who are currently under their effects. Let me throw you a number here, so you aren't already calling me out. Lets say for every 10% your champ is slowed, you lose 1% blink/dash distance. 15% slow= 1.5% reduction to dash range, etc. etc.

Okay so lemme paint you a scenario, Summoners. You are playing talon, under his fresh new nerfs, and you blink to lucian reducing his movement speed by 99%. In the same moment he dashes away from you, returning fire from his new location. His normal dash moves him 425 units away, but since he dashed while heavily slowed, he is now 383 units away. It's a small change, but in my opinion it's a start to more healthy gameplay. Keep in mind that if talon is already under fire and his movement is being reduced, then his blink distance to close the gap to lucian is also slightly reduced. Tastes like counterplay to me.

Edit** I don't mean to say that we shouldn't have champs with dashes and blinks, moreso that these abilities largely increase a champion's power in "untracked" ways, or ways that don't have many downsides. Consider the flaws of Kassadin's ult and Tristana's Rocket Jump, and how mobility is just a thing that often doesn't get fine tuned in the same way that spell damage does.

Edit**9/27 I like this discussion. Plenty of fair points, but lets make it clear here that huge boosts to Movement Speed are not what I am referring to. You can catch and slow a fleeing Evelyn with a well timed slow at the start of her movement steroid, but you CANNOT stop an Ezreal from blinking away from you, even if you land a huge slow- like Thresh's Ult.

Also, I'm calling it the Mobility Meta, because champs that have mobility fit more easily into the current meta than grounded ones. As the game changes, the metagame changes right? Well, lets remember the old "metagolem" tanky bruisers with atma's impaler and warmogs was a huge staple. Now this meta ended when Rito nerfed Atma's Impaler. That is how that specific meta ended, and how others have ended. Think about how many times Lulu Mid has been nerfed, this also affects metagame. ^this is a good thing. The game continues to evolve, and playstyles change and different regions develope different styles. This is what makes this game so interesting and what holds our attention game after game in the same map hundreds of times. Every game is different.

TLDR:::: Now my problem is the stagnation involved with dashes and blinks. There are no items or skills that reduce the effectiveness of these mechanics, therefore this meta will not end.