Losing Games Due to Incorrect Item Builds On Teammates?

Ever lose a game because your Lucian didn't build QSS against a Malzahar? Because your Talon started Duskblade and Swifties against an Ahri? Because your support Lux would only build damage and never got a Sightstone? Because your Mundo never built Thornmail against a Jax, Yi, Yasuo, Lucian + whatever support?

There has to be a way to work on this. I think it would be great if we could have a new suggested item page implemented in the shop that would take into account the enemy team composition. My idea for it would be that would highlight in some way items that would be highly advisable to build in whatever game you're in. Say for example you're playing Yasuo mid against Viktor with a pick composition behind him, let's say Elise, Morgana, Jhin, Rumble. I would suggest early Merc Treads and a QSS between purchases of his 2 Crit items.

This is just an idea and I think it would really help out players who aren't exactly deep thinkers (such as the just for fun players who log on a couple times a month) look at the champs they are against and pick what item would be better to build and also help those who might be new to the game or maybe they just do not know what items to build. It would really mean a lot to me if this could be implemented in the future. I'm trying to get some of my friends into the game but they find the item system so incredibly overwhelming compared to other games such as Heroes of the Storm for example that does not have an item system.