I apologize if this is in a thread somewhere but I couldn't find one. I've been pouring over the wowhead ptr database and came across a few things:
Accelerated Balanced Trillium Ingot - 1 trillium, 1 spirit of war
Accelerated Celestial Cloth - 10 windwool bolts, 1 spirit of war
Acceleratec Hardened Magnificent Hide - 2 magnificent hides, 1 spirit war
Looks like spirit of war may be the new raid crafting material in 5.4...also someone on wowhead commented that these spirits may be used to bypass the daily CD on the 533 crafted material giving those who raid more access to these materials. I would have linked it but only so much access is allowed at work .
Also, it looks like scribes are going to be able to craft a pvp trinket, "Crafted Malevolent Gladiator's Medallion of Tenacity" which requires only 10 ghost iron bars and is item level 476. This item appears to be learned from a recipe...perhaps a drop like some of the other professions have.
All this is speculation but you might want to factor in these crafts as you prep your stockpiles!