Thanks for listing all that, it must've taken some time to lay it all out.

I didn't know about the other foedus' that will happen later; having only the Frankish foedus in Colonia-Agripina in 358, which is good to know. When is the scenario end date exactly?
As I mentioned, I do have Italy after taking Ravenna and I have triggered Agilo in 359, although I haven't made it to Sirmium yet and it's 362AD now. One of my questions is whether Julianus will inherit the part of the empire that Constantius controls at some point.