I have a theory regarding the antagonists for Wonder Woman. Let's talk about this graphic for a minute. It comes from WIRED's Lex Luthor promotion, paid for by WB.
You see here several corporations from DC Comics and their defense budgets, stacked against the proposed Lexcorp defense budget. Obviously this graphic, as well as the rest of the promotion, is meant to reveal some plot details as well as enrich the world of the DCEU. However, there is one corporation that stands out from the rest: Geschäft Krieg.
Geschäft Krieg is the only company in this graphic that does not exist in the comics. Neither does Sheridan Dynamics, which is mentioned in the graphic as a recent acquisition of GK. Also, nothing within the text clearly connects GK or SD to anyone or anything already existing in the lore. So, why would a promotion paid for and created by Warner Bros. even bother mentioning an irrelevant and completely fabricated company? Perhaps they just wanted to fill some space in their graphics but ran out of canonical corporations. However, what if this is all a tease?
Maybe Geschäft Krieg is a front company under the control of Ares, and maybe it becomes a major plot point in the WW movie. The name Geschäft Krieg is German, translating roughly into "Business of War". We've already seen WW fighting German soldiers in the First Look footage. What's more, a light bulb manufacturer becoming a weapons contractor at the start of WW1 is similar to the history of real world German industrial firm ThyssenKrupp. It could be that Jenkins and Co. are using TK as a model for GK, and putting Ares at the reins.