URF is fun, but doesn't work well with all-random.
I've played about 10-15 games and have found only a few of them actually enjoyable. Most of the games I've experienced have ended up with one of the teams being stacked. I'm either endlessly stomping the opponent, or getting endlessly stomped myself. Neither scenario is particularly enjoyable. It's often over in champ "select".
You could say the same thing about ARAM on howling abyss, however the 80% CDR and URF buffs makes certain champions completely god-tier and faceroll the entire game. With regular ARAM, the difference between the two teams' strength is often more manageable, whereas if someone gets vlad/garen/hec/fiora in AR URF, it's all over. You're not so much playing aram but rather a game of bingo in this scenario.
I suggest either making certain tweaks to specific champions within the gamemode to not make them completely absurd, or adding a ban phase if you guys want to keep the random part in. I know I'm being a bit of a party pooper. I get it, it's a featured gamemode. URF is fun as hell, but I feel like the all random aspect added in made queuing up a pretty big hit-or miss.
Okay, I'll be honest. I'm mostly just tilted about Vlad being untargetable for 99% of the game.