"Ultimate Bravery" ( random build/mastery/champion generator ) should be an actual game mode.

A few years ago this became a trend and a fun thing to do with your premades or on a new account. It basically gives you a random set of masteries, skill order, items on a random champion and you will have to stick to that build no matter what.

Because of the game getting more and more competitive to the point where you will get banned for doing this, it became less and less popular and the site is pretty outdated today.

I think if Riot actually sat down and developed an actual game mode out of this, where the game is programed so that you actually have to build according to the random generator on a random champion, it could come back.

It would be a lot of fun, not only because it would contrast the super competitive environment we have right now where you have to win at all costs, it would also rarely ever get old. Instead of having to build the same top tier build on the same top tier champions every game, all of that gets completely thrown out of the window and you actually have some notable differences from match to match. It would also encourage a lot of teamwork to figure out who is going to what lane. Or people just don't care and go wherever, it would be a casual fun mode after all.