My Main Issues with ARURF
There are a lot of people hating and also enjoying the ARURF mode, but in my opinion they didn't really fix the issue. OP champs are still OP champs. So you could get a group with average champs or relatively good champs but they get a hecarim or a fizz well you lost, nothing to do about it. The thing about original URF was that at least you can counter op with op. In this you can be blessed or cursed. Sometimes you'll get zed but then some games you'll get yasuo. So regardless a lot of people still aren't having fun.
The other issue obviously isn't a problem for everyone but i personally own every champion so it is very very rare ill get to play as a champion i want. I like ARAM and all so the random part isn't the issue but i want to try new things that maybe aren't op or aren't regularly tried but ill probably never get that chance.
The last issue which effects everyone is ARAM accounts. "Not all ARAM champs are good on URF though" yeah ok but a pretty heavy amount of them are. Ranged mages dominate early game in URF and if you can guarantee you will get one well gg you probably won lane. But yes many people don't have champs like eve or shaco on their ARAM accounts but some do which makes it unfair when some people have to choose from a champion pool of 15 strong champs in comparison to 100+.
I would say the best solution would be to give the option to either get ARURF or normal URF ORRRRR to have all champs unlocked for ARURF so that no one has an unfair advantage.