3-4 que min timers. None of my friends are interested it. the rank enjoyers or aram spammers. both found it boring after 4-5 games and they were hype for it and said we need it back
URF/Arena had instant que pops the day it came out until end. (I was grandmaster top 30 so idk if ques were lower for arena for lower mmr)
Just like all of the other rotating game modes though. As much as people love URF I feel people spam the shit out of it on day 1, get sick of it and go back to Ranked, Norms or ARAM and then the queue timer on URF gets super long.