Should Rylai's also ground targets for the same duration that it slows?

It might sound OP on some champions cough , but considering the slow is only 1 second in duration, and most mages don't have cooldowns low enough to abuse it, it could really be a soft counter to all the hyper mobility that mages have to deal with in the game and make the slow feel more rewarding. Even in the case of Singed, the grounding effect would wear off within 1 second of leaving his poison trail which is more than reasonable.

It's just one way Riot could buff the item without increasing the slow or overloading the base stats.