Spoilers
I think Konpeito missed an opportunity to include a recreation of the high school graduation group photo Baxter is in with Marcus, Callum, Troy, Karina, and Ronny in WIFL, with Troy, Karina, and Ronny drawn in the new WIFL style.
It might be just me, but I think Marcus' haircut might be out of regulations. It looks like he has more than the 2 inches of hair bulk on top of the head allowed for men by the current, at the time of writing, US Army grooming standards.
Also, I know it's wishful thinking, but perhaps Mylo could have asked Jakob if he wanted to be friends when Mylo met up with him to return the spare key.