I'll drop this theory off here for the night.
https://www.gonintendo.com/stories/...ear-your-requests-for-waluigi-and-geno-in-sma
This interview was posted in late 2018, when Fighters Pass 1 fighters were already finalized.
Before I continue, I'll like to address who we're listening too here.
"J.C. Rodrigo".
https://www.linkedin.com/in/jcrodrigo
Rodrigo is a Manger of Product Marketing at Nintendo.
Why is this important? Well, if Nintendo knew about demand, he'll be a guy that would absolutely
KNOW about if they're listening.
Being Manager of Product Marketing isn't something to sneeze at, but anyways, but on the point.
He addresses Nintendo is widely aware about the fan-demand of Waluigi and
Geno.
And if you look at the date when this happened, it was
November 2018.
Right when the characters in FPV1 was being finalized and production already started.
Now, lets go to to the Byleth Presentation.
"1 or 2"
2 bonuses were likely being planned around the time insider Imran gave detail on when they decided to make more DLC, which was around E3 2019.
Now, with proof that Nintendo is listening to fan demand, 2 bonuses were planned, but they said "**** it", and made a whole pass, and
everything lining up for Geno's inclusion currently.
I feel like its, more possible now.