Game Mode Idea - Randomized Abilities

Was thinking about how most of the rotating game modes go stale after a playing it a few times, but one that would be fun and different every game would be to have a mode where all abilities are randomized. Not completely randomized, but something along the lines of make three ability pools - one for AP/AD Melee/AD Ranged champs. Then assign each ability in the pools as Damage, Crowd Control, or Utility. When you get into a game with whatever champion you like the best, you're given a random passive, a random damage ability, random CC ability, random utility, and random ult from one of the three pools based on the champion you chose.

Then to further spice things up and make sure one player isn't just stuck with a bad pool of abilities, make it so the dragons respawn every 3 minutes and when a team kills a dragon, that entire team gets something like Kha'Zix evolve ability buttons that allow you to reroll one ability of your choice.