You can improve a single ability on one champion. Who, what, and why?

Is there a champion you feel is underplayed due to his/her inefficiency in team fights?

Every champion should have a meaningful impact in team fights. There are a several that don't fit into any of the conventional roles, and have been almost completely phased out of the game. The Riot staff does a fantastic job of evolving this game, but sometimes a champion gets left behind.

Personally, I would alter Garens play style. I know, I know. He's a one dimensional character, but his kit doesn't add very much to team fights. You don't often serve as more than a human meat shield in most skirmishes. In this aspect, he fits well into the "tank" role. His damage over time is low but balanced due to his role, and his silence can be useful when a carry needs someone to peel. However, his general lack of any meaningful crowd control can make him laughably easy to kite. It also hinders his ability to come to the aid of his squishier teammates. I'd like to hear some feedback on two separate concepts that would give Garen a slightly more intelligent and team based role.

The first option would alter only his q ability. Instead of a silence, I wouldn't mind seeing his q deliver a short knock up. I don't think this would even involve a massive overhaul. I feel as though his jump animation could simply be reversed. Starting from a downward position he would "lift" enemies into the air with that ridiculously large hunk of metal he calls a sword. A short stun could work as well. These are both stronger crowd control effects, so the duration has to be shorter than that of his current silence.

The second alternative would involve only his ultimate. The animation itself is fantastic. It looks powerful despite its limited functionality in the later stages of a game. Garen's ultimate is limited in that only a single champion is effected. This ultimate should only ever damage a single target, but I would also like to see it produce a small area of effect silence. This area of effect would also need to be relatively short. I feel like this change would allow Garen to use his ultimate to defend weaker teammates without it becoming overbearing. This alteration might be too much for the league of legends community, but I would simply like to see a more team friendly Garen. Tell me what you think of either change. Hopefully enough dialogue will lead to an improvement in Garen's team fighting functionality!

Leave a post about a champion that you feel is underplayed due to his/her inefficiency in teamfights. Only include realistic and balanced changes. Remember, you're only altering a single ability on one champion.