Someone on Reddit pointed out that there was an Eagle Spirit showed off in the Direct. Here's the timestamp.
Of course there was also the one
RamOne
posted earlier with Olaf which points at evidence for many Advance Wars CO's showing up as Spirits. And they span from different games as well. Eagle's is based on his AW1 artwork and Olaf is AW2 based. Which makes me believe there's going to be a lot of Days of Ruin CO's as Spirits as well.
Andy not being there makes me have a little bit more hope in the theory I made as well. It wouldn't make sense to not have the series main character straight up. Time will tell...
Advance Wars got done dirty in this game for sure (well at least the base game for now). I mean Sakurai is not one to throw a series like this aside just because relevancy isn't on it's side (I mean sheesh look at all the AT's and Mii Costumes in the game). I firmly believe if that Sakurai didn't think Infantry & Tanks wouldn't work in Ultimate, he would have overhauled the AT entirely in to something else.
Something is up. Being absent in both Assist Trophies and Mii Costumes is reason for suspicion.
Also guys plz don't ask me about my new avi. Lets just say I made a bad bet and now I have to keep it for a while lol.