Can we get a MR/CDR item for tanks?

There are currently four MR/CDR items in the game: Athenes Unholy Grail, Mikaels Crucible, Locket of the Iron Solari, and Spirit Visage. Of those, only one (SV) is a truly attractive option for tanks. Locket is a decent tank item too, but it's not a particularly cost-efficient source of personal MR.

Spirit visage is a great source of CDR/MR for tanks, but the passive is useless on a lot of champions.

Tanks who want to max out their CDR early are often pigeon-holed into buying Frozen Heart. FH is good against heavy physical comp, but it feels like a waste against a team with 2-3 mages.

The game could use a new MR item anyways. Generally speaking, there are more armor items for tanks than MR items for tanks. A tank who wants armor can grab Frozen Heart, Thornmail, Randuins, Sunfire Cape, or even an Ohmwrecker if you're feeling ballsy. There are only two true MR tank items: Banshees and SV. At most three if you want to count Locket.

There doesn't seem to be any good reason why it should be easier for a tank to max CDR against a heavy physical comp than against a heavy magic comp. An MR equivalent to Frozen heart (20% cdr, mid range cost) would be really nice.