He's definitely introverted, not so aware of his surroundings, not particularly prone to emotional engagement with the others (as per his incredibly stilted conversation with Lipton), and he doesn't have much sense of order or discipline

Yes, very true.

I'd be withdrawn and uncertain and panicky too if I was suddenly made leader of a company of tight-knit veterans.

Good point. I can agree that Dike definitely did not have an easy situation to step into. But I think I would sympathize with him more if he hadn't been so cowardly. Constantly fucking off to parts unknown and leaving the men to fend for themselves (thank goodness for Lipton!) is just unforgivable to me. In contrast, I sympathize more with Sobel, because while he was a bad combat leader due to his poor decision-making (not to mention he was a douche), at least he was dedicated to his role.

Uncertain and panicky, I can understand, but running away and not even trying is a dealbreaker for me.

Thanks for the clarification! I always find this stuff really interesting. :)