urf is a terrible mode because there's 10 champions that completely outweigh every other. the first time it was introduced everyone just started playing Sona/Soraka (old soraka)/Ezreal/AD Malz/Karma every game. the map is also completely unwelcoming of that mode.
You wanna make URF worth a shit? Apply ARAM rules.
You wanna make URF worth a shit? Apply ARAM rules.