This is terrible for so many reasons.
Since when does Jhin not have mobility? You can get 500+ MS with him and stormrazor and phantom dancer and he has a root and a slowing trap and a slowing ultimate
Jinx has her passive and a long range slow and a rooting trap
MF has her W
Sivir's ult gives her and her team a ton of MS
Graves literally has a dash that gives him armor and reloads his gun
Ashe slows people with each basic attack which is just as annoying as mobility when she's chasing you down and giving you a good impalement
Kalista has a lot less mobility than anyone else up there. Kindred snowballs for many reasons, but her dash isn't really one of them her passive is. Twitch is a murderous lane bully, but his stealth is incredibly important to his kit. Lucian has almost no AA range and can be easily CC'ed if he uses his dash as a gapcloser. Many of those champions you hate aren't as bad to play against as MF or a good Draven.
The tradeoff for mobility is simple. Low CC.
Xayah needs to throw down three feathers right behind someone to get her root, which is difficult unless they're right in your face.
Vayne has Condemn which is pretty good but also very conditional.
Twitch has a small aoe slow that isn't great and is hard to peel with
Tristana has a medium slow that is connected to her leap, making it bad for peeling
Quinn's CC is pretty annoying.
Lucian has no CC
Kindred has two slows, but they aren't great and you can't peel with them
Kalista has a small slow that never gets above 50%.
Kai'sa is annoying. But she doesn't have any CC and you can't peel with her ult (normally).
Ezreal has no CC.
Also
is crying now