Tatzel wrote:I'm not only talking one different item, I'm mainly talking about whole different builds which give champs completely different roles.
For the case of Quinn, if she was a tank, using her ult provides good utility. Good initiating, a catch up (and maybe interrupt, I forgot if bird has it too), and an aoe blind. And not to mention a sort of AoE execute. There are enough health items with resistances so you can just slap an Atma's on it if you really want to deal some extra damage. With all that extra attack speed you can also get a Wit's End. Or a Hydra if you feel like trolling.
It's not even specific Quinn, christ you can just slap full tank equipment Heimerdinger in there. Often it's just a question if and how different roles work. But more than often you see people opposing something, unless the pros are doing it, then it's meta and then it's either okay or just outright law. Like suddenly support Annie's popping up everywhere.
But for example, people giving support or adc Le Blanc a chance? Nope. You got two choices there: either mute everyone who is bitching, and then not be able to communicate with your team, or play with 4 friends. Because I can guarantee you that every random will just bring holy hell upon you like you just lit their house on fire.
Atma's isn't as good of an item as you think it is. It does not give nearly enough AD to just make a tank into a carry (btw it gives about 58 AD on Quinn and that's with late game tank items and 58 extra AD on a tank late game ain't gonna do shit). Also you're buying crit. Tanks never wanna buy crit because crit does shit without a lot of AD. Honestly, you would probably do more damage to the people the count with a thornmail, and you would be tankier.
As for unconventional picks for roles, there's a kernel of truth to the naysayers. The unconventional picks are generally worse, but they also usually do one or two things really well whilst being useless the rest of the time. They also require actually knowing how to play said unconventional and not just playing it because the pros are. In the end, it's all about viability, and the champs/role combination that is the most viable has the highest chance to win. And people in League like to win, so when they see other people possibly ruining their chances of winning, they'll get upset.