BEST changes to Garen possible
Garen needs to get with the times, these fix a ton of the reasons he is not a top pick.
Change his Q. Doesn't fit with all the overloaded new champions, remove the silence, and replace it with a single target knockup. Keep W the same. Keep E the same. His ult now has a silence. Currently his ult is only good on a low hp target. The silence would have an increased duration the higher the targets HP %. THEREFORE you have a decision to make, ult early and have a long silence on target, or try to execute them with little to no silence.
These changes allow garen to have some team fight utility. Before you spam how OP it is, just look at some of the overloaded champs now, Garen could really use a change like this, and it allows him to keep his same basic playstyle.