Jungling, Smite, and Reporting the Smiteless

I'm starting to think there's something inherently wrong with Junglers being able to not take Smite. Like, not "it creates problems" but in that "we've let bureaucracy build up to a point that it isn't logical, and we should change it."

I had a game with a Yi the other night who forgot to take Smite. I don't think it was intentional, things happen and iirc he swapped into the role. So even further chance for things to go awry. I get that life happens, but here's the thing:

You made jungle almost require Smite. To the point that if you don't take it you're set back monumentally. Even Nunu, who has a built-in Monster killer in his Consume takes Smite. It's not mandatory, but it's mandatory. If a jungler doesn't take smite, it amounts to a waste of everyone's time. 45 minutes down the tube. It's tilting, if done intentionally it would likely be called trolling, and it leads to a bad game experience for everyone on the team.

So why doesn't Riot make it mandatory? I actually don't know, but if I had to I'd guess that they've still got one foot in the "we don't want to dictate the meta" movement. And that's bad. I personally believe we need to reconfigure the system so that Smite always goes to your "F" key upon assignment. This is the simplest adjustment we have. Or at least some sort of "I see that you're jungling and you haven't taken smite" warning. I don't care if you are given smite and remove it, but this problem needs to be reduced.

tl;dr - If the problems created by not taking smite are so close to "trolling" that we can't tell the difference, something needs to change in order to reduce the amount of time wasted in playing this game.