It's my opinion that most items are outshined by a few. Rageblade, Spear of Shojin, Phantom Dancer, Rapid-Fire Cannon, and Zephyr are all probably overpowered (maybe not Zephyr). With that being said, I think that other items (mostly tank items) are simply outclassed and not prioritized due to the nature of needing Recurve Bow-based damage on a carry. Either Recurve Bow items need to be nerfed or tank items need to be buffed. I think the simple act would make items like Hush, Cursed Blade (yes I know it's a Recurve item, but slightly under powered), Sword Breaker, etc much more powerful. Great point, however, and I think that item balancing and item addition is something that Riot is probably, and hopefully, working on.