Did you Forget Smite?
Now, Ive only forgotten it like 2 times in 2 years. But still, if you were assigned Jungle, you are expected to have it. There is no reason why we can't have a pop up when the game starts, if you were assigned Jungle, that asks you "Did you forget Smite? Please click the summoner spell you want to replace or cancel"
Every little thing Riot can do to make sure matches are as fair with the least amount of aggravation helps. They should implement this. I know they need a god damn committee and 12 months to implement it, but hey, maybe someday.