New game mode suggestion

Ok so everyone enjoys crystal openings. And maybe not everyone, but a number of people enjoy an aspect of randomness. So what if we had a game mode where upon entry, (or before entry) we opened up "x" amount of Crystal's and gain temporary access to whatever champs we roll and can only use them on this game mode. I think this would be fun for new and existing players. The content we would use the champs for could be similar to either story, or incursions. You could also run this with friends, or as a competitive mode.