Speaking of fringe items I wish they hadn't changed Banner of Command. The old one was just perfect on Heimerdinger and now the new one doesn't have the bonus dmg to minions aura while also being much more expensive. Now it's just waiting for fringe abuse cases (make a baron buffed siege engine magic immune) and not much else.
I'm also really not all that thrilled with support itemization. Spellthief and Frostfang are alright but Frost Queen's Claim is bleh. Relic Shield is bleh, Targon's Brace is good, but Face of the Mountain is bleh. The whole Ancient Coin line is bleh. To make matters worse there is a lack of good mid range items to buy. Back in Season 3 you could build a Kage's Lucky Pick and that itself could be built into a Twin Shadow's. Twin Shadow's was cheap, had a decent assortment of stats, a really cool click,and it built out of GP10.Iron Locket of the Solari was cheap at one point. So was Shurelia's Reverie and thatalsobuilt out of GP10. I want some budget options, damn it.
I wish they would start over with the entire support itemization and do what they did with that what they did with the jungle items. You've got your base item, your upgrade paths, and your enchant paths, each one tailored towards a play style and each one that, when completed, is pretty awesome for the thing that you are doing.