New Media Does Something Weird
Not much of a prediction, I know. From orgasming emojis to Miku-miming her worshippers into a frenzy in virtual reality, New Media has been the manifestation of millennial ADHD. Although she's (currently) Mr. World's most powerful weapon, we've seen how quickly he changes horses and so has she. It's a sure bet that she'll want to retain dominance over his "new friend" so she'll develop some new tricks ASAP.
Technical Boy Gets a Reboot
Although officially "retired" by Mr. World on American Gods Season 2 Episode 4, we saw that Technical Boy had a long evolution in America and that leads me to believe that Mr. World has plans to roll out a newer, shinier, lemon-scented version before the war begins in earnest. A mash-up of Technical Boy and Argus would be of the most use.
Mr. Wednesday Has Regrets
It goes against everything we know about him and plays to the part of our emotional make-up that wants to humanize all human-looking characters, but I would like to see Mr. Wednesday express some modicum of remorse for SOMETHING.
Mr. World Gets All the Toys
As the God of Globalization, the Great Unifier, Mr. World has a surprisingly difficult time getting ahead of the menagerie of Old Gods intent on going old school on his reign. Although he manages to keep Money from throwing in with Wednesday's lot, he seems to lurk a lot in Blackbriar for the majority of American Gods Season 2. I predict he'll come out swinging on the finale with an arsenal of high-tech weaponry and tools while directing New Media to bleed her worshippers dry to fuel the lot. The big reveal, of course, will be the "new friend" from the boys in the Valley.
Shadow's Purpose Is Revealed
No spoilers from the book but Shadow's suspected (as have we all) throughout American Gods Season 2 that he was hired for more than his chauffeuring and bodyguarding skills. Ever since signing on with Mr. Wednesday, he's been hunted by New Gods, haunted by weird visions, reunited with his dead wife (only to have her wander away again), and borne witness to the meetings of gods, dwarves, and genies.
It's likely that he'll face repercussions for breaking his word to Mad Sweeney as well as for losing Gungnir but his role in Wednesday's war will definitely be more important than either the leprechaun or the spear.