Idea for quiz challenges

Idea: wouldn't it be fun if there were a function where you could invite another user to a quiz contest? One user could send an invite to take any quiz to another user. The stats would ignore previous attempts and just focus on the first attempt taken after the invite. They would compare how many questions were correct, what time was taken, how many whammies used, etc. My friend and I love to do quiz contests and compare stats, and I think this idea could make for a fun, native, streamlined version of this. Plus, you could play with users around the world, all on your own time.

I am aware that new ideas probably aren't a priority right now and this may be quite complicated, I just think it would be a fun feature one day :)