Riot, it's time to rework Locket
EDIT: It was not not clear by the title, but the proposed changes involve heavily Zeke's Herald too
Back at the start of S4, there were as support items on one side Locket of Iron Solari which provided Health, Armor, the Legion passive and the shield and on the other side Mikael Crucible which gave MR, Mana regen, and the active to remove CC from allies. When you changed Locket into an MR item, you created an overlap between those items, cause both gave MR, which forced often forced supports to renounce to one of those 2 or to damage items cause they needed to buy armor on a different item, and that was quite honestly the only bad thing in which has been a season which rewarded a lot supports
Now that you have come out with the new Banner of Command which do anything Locket do except the shield, but just much better, it's finally time to put Locket back as armor item for supports
And you could also use this situation to finally rework that Zeke'sHerald item that is never used
NEW 
150 health 20 armor
Active Unique: Shield yourself and nearby allied champions for 5 seconds, absorbing up to 50 (+ 10 per level) damage. 60 second cooldown. (600 range)
(300g) +
(300g) +
(400g) + 500g =1500 gold
NEW
250 health
30 armor
Aura Unique: Nearby allied champions gain +20 attack damage and +10% life steal.
Active Unique: Shield yourself and nearby allied champions for 5 seconds, absorbing up to 50 (+ 10 per level) damage. 60 second cooldown. (600 range)
Locket of Iron Solari +
(800g) + 500g =2800 gold