So something just hit me. The ultra marines were devastated by the tyranid hive fleet. With the return of the primarchs then I cannot wait to see what the tyranids will be bringing to the table. Hopefully it will end like in a 1v1 between something new and guilliman. Potentially having him end up like calgar more machine than man. Plus we have been analyzing the imperium a lot I think we should look at the broader picture and identify something primarch sized every race could receive. Like the Necrons are their gods going to come back? or the tau do they have a new battle suit to try out? etc etc.