Reddit user andygmb, the general manager of Team Ireland, has created a mash-up between "/r/ CompOW's favorite heroes Mei and Moira" complete with a new icy biotic orb. Genji mains are going to be having nightmares for weeks. Comments on the original post range from "Why God, why," and "You were so preoccupied with whether or not you could, that you never stopped to consider whether or not you should," to "Am I the only one who thinks this looks awesome?" and "She's beautiful."
The Meira orb that was the featured element of Meira's introduction video seems actually seems pretty cool (pun totally intended). Basically the healing/destructive effects of Miora's Biotic Orbs have been swapped out for the freezing effects of Mei's Endothermic Blaster, creating an orb capable of freezing multiple enemies at once.
Andygmb stated that he was taking mashup suggestions for the next Moira so we might see some other interesting flavors of Moira Orb in the future. To find the code for this experiment you can check out this workshop page. Just know (and be thankful) she won't be hitting the competitive scene any time soon, she's only available in PTR, and my nightmares.