Oh, right, I was supposed to do an analysis about yesterday... So, yesterday was a really good day for two characters specifically in my opinion. The first I'll cover is Geno.
"Min-Min can equip Min-Min."
Technically this has already happened a few times thanks to all the variations of Mario, Link, etc but this is the most on the nose it has been. Geno can now equip Geno because they doubled down on the meaning of "fighter spirits." A fighter can equip themselves and, honestly, this kind of makes sense in context. The spirit battles are rarely literally the character you're fighting but some variation of them. They're another character or a Mii and, if they're not, they're giant or tiny or wearing a bunny hood or whatever. Min Min's spirit battle not being literally Min Min makes perfect sense. Going off of this...
"Min-Min's spirit event didn't change."
This is pretty important because now we have a definitive answer about something we've long been curious about: what would happen to the spirit battle if a character made the jump to playable? What this means is that if Geno made the jump, he wouldn't just be inserted into his spirit event so that's technically a non issue now. Why is this so important? It's because of how they have chosen to handle this.
When spirit battles have changed, this has been because of new Mii costumes and not new characters. The bad news about this is that it further cements Mii costumes as a sort of consolation prize. Not to say it's impossible but if a character is already a Mii costume and has a spirit event that specifically focuses on a Mii costume version of themselves, it's probably bad news bears. This is why "awkward" spirit representation is actually kind of a saving grace. We've only seen Mii costumes replace characters, not Mii costumes replace other costumes and this has only happened very recently. Rex, Tails, Zero, etc did not get updated spirit battles when their respective Mii costumes came out and they all had "awkward" representation too. This means Geno's spirit battle is probably locked into place whether he gets a Mii costume or not, making it even more apparent that he's successfully dodged 6 Mii costume waves.
So, in conclusion:
-Geno the spirit and Geno the fighter spirit can now both exist.
-Because Geno's spirit battle was in the base game, it probably won't be changed to accommodate a Mii costume even if it comes so it's existence is now irrelevant to his standings.
-Geno having a spirit and a spirit battle no longer affect his standings.