Is U.R.F mode coming back?
I missed it last year :s.
and I wanna try out 
I missed it last year :s.
and I wanna try out 
It'll probably be thought to come back as like an april fools joke
I hope it comes back, I missed it last year and when I saw all the videos

Riot things its a burn out mode but I think they are in denial. I and countless others were demanding more URF when it ended so them saying it showed decline in interest is complete BS. Keep asking for it and eventually we will get it. I've already decided I'm not spending anymore money in LoL untl they bring URF back and I have not spent a penny on this game since April 2014.
It was fun to begin with and throughout its stay but the biggest problem was then going back to normal games without that no mana cost spamming your abilities and having low cooldowns took time to get back into.
U.R.F Mode was fun to play one or two games of per day and i have to agree with the numbers rito have come out with. Just because there only really seems to be people wanting it to come back posting and re posting (you never know how many accounts some of the people have)to bring it back it is still a smallish amount considering the player base all over the world. It really wasnt hard to spam spam spam but really its like people who say yi or kat are so broken on aram and that they take no skill to play...URF mode took 0 skill to play any champion that you dont usually play or are not really sure how to play.
In all honesty i don't care if they don't bring it back, if they do ill probably play it and have some fun but if they don't then i am not gonna miss it that much. I have played most of the game modes they came out with only missing Hexakill twisted and Ascension as i wasn't really playing league at that time. Each mode though has been fun to play and i had some great laughs and times playing them all but they are fun for a while and break up the routine of playing arams and normals/ranked games all the time.
I currently have 1004 wins on classic and 999 on ARAM and as many losses too so the game modes are a great distraction for a time but thats it, enjoy them while they are there and wait for the next one.