Request: Put Greivous Wounds on Oblivion Orb

I've been thinking about this for quite a bit now: Tanks have a fairly inexpensive answer to sustain-heavy comps in Bramble Vest AD damage dealers have a VERY inexpensive answer to sustain-heavy comps in Executioner's Calling AP damage dealers' only answer to sustain-heavy comps is the 3300 gold Morellonicon One of these things is not like the others...

Considering support builds have been opening up, and Conqueror and Aatrox aren't going anywhere, I propose a change to Morello's. Simply put give the Grievous Wounds passive to the Oblivion Orb component in exchange for the spell pen passive. I feel like it would be a fairly neutral change (open to stat and gold adjustments either way) that would give AP champions, especially supports, more parity as to which classes can access Grievous Wounds.

I am aware of concerns with this approach. Mages in mid already have big power spikes and being able to counter sustain at only 1600 may change the way matchups work in that lane, but I think with enough tweaks the benefits outweigh the costs. I firmly believe that supports should have access to the same level of counter play that AD and tank champions have while sustain is such a prevalent part of the game, and 3300 is too steep a cost for that. In a bad matchup the tower would be lost and laning phase over before a support could spend that much gold. 1600 is a more palatable number even if it is a higher cost than 800 or 1000.

So in conclusion, I'd like to see Grievous Wounds given to Oblivion Orb instead of having to wait on Morellonomicon for an anti-sustain AP item. If you agree/disagree for any reason go ahead and let me know.