Unlikely Johns takes the heat since he wasn't really responsible for Justice League(he came in after shooting began) and wasn't instrumental in stopping the delay. A lot of people saying that Tsjuihara will get the boot but remember WW, Dunkrik, and It were major successes for the studio that surpassed expectations under his reign so I can definitely see him surviving the inevitable fallout from Justice League's underperformance. With all things considered, Warners had a pretty damn strong year. Justice League was one of the few black eyes for the studio this year but it's not going to sink this ship--quite the opposite it's just going to make them set a new course and abandon the initially planned destination.