Markers.

What if riot implemented some sort of marker on the map? So for example, you click a key like "J" or something, and then either left click on the map, or the actual arena itself, marking that spot. And maybe if we want to remove it, we press "J", then right click the marker instead of left clicking it. And to make it even better, its YOUR personal marker, so no one else on the map can see it.

Maybe you could have only a certain amount of markers on your screen and make it translucent so we can see enemy champs or monster camps.

I dont know, it was something I thought of when I had to keep reminding myself to do a certain objective on the map, but I kept forgetting.