Honestly dude I don't understand this circle Jerk about item sets and am on your side and any other similar side.
The amount of effort it takes to go in and make an item set for each champ class or champion is about twice the work it takes to memorize where the items are in the big list and or learn how to navigate the menu. For the people who say it isn't organized there's literally a big list of checkable sort boxes and a search bar.
You have 8 seconds to recall and more if you die. You should have not only figured out what you're going to be building before you shop in the first place, but have more than enough time to type the first three letters of the item you want in the search bar.
Besides there's so many tricks to navigating the menu, like clicking an item with a same recipe part for another item. But it all comes back to actually taking the time to learn the system that's in place.
I mean I'm all for you guys using the tools while they were presented to you, that's all well and fine. But times is changing and it's time to move on and adapt. There's really no other way to go about it. You can't have your cake and eat it too, this was what riot decided to cut in order to give us a myriad of other features. In a few months you will all be bitching about the next thing and the only remnants of this will be the 4 or 5 salty forum heads who can't let it go and would care to blame everything on "if I still had items sets".
There's some things changing that I'm not thrilled about. But guess what, riot has changed them, they have a design path and a goal, and they are executing it. They've been giving a lot to the community lately as far as wish fulfillment, stop clawing at every last morsel like a bunch of needy rats.