Sadly the in client survey offered no chance for text feedback... I found a lot of people would rage or not play to win when a champ they disagree with wins... which was not and experience of mine during the plain one for all.
Some solutions then in the paragraph after the following is just drivel/reasoning that can be ignored.
A (assumed) simple fix could be team builder one for all, or go back to majority wins where ties are treated as an even random chance for the tying majorities.
I had overwhelmingly positive gameplay in the cracked version of one for all where people were running customs... for everyone knew what they were getting (except for an occasional spoiled sport that'd make it 5v(4and1). In the non-mirror mode One for All that was official, it was fun for majority won, thus if one complained one was no way in the right... where a 10% can beat a 50% is unacceptable... thus why I only agree rather than Strongly Agree I'd play it again... for whilst it is fun, the latest iteration sadly fell short.
Since I am posting this I feel I might as well say it would be awesome if we could piece together our own game mode combos (rather than have to choose just one (URF only, URF + Hexakill, Hexakill+One For All, Hexakill+One For All Mirror Mode+URF, etc.)) on any map. I know it is not a desire to split the community, but a day dedicated to other modes one a week or something would be awesome... and maybe have the community vote on what mode can be there the entire week? Or "Extra Game Mode Weekly Rotation" (with a better name perhaps) with the once a week day for all game modes as well... that way their can be featured extra game mode... and well you all get it... different tastes for game modes and what-naught and keeps things fresh.