It is going to be "hilarious" when the final roster is known and it is nothing like speculators or fans predicted. See what happened when Melee, Brawl, and Smash 4 all leaked. The same will probably happen with Ultimate. People will holler up and down that it is missing certain characters that are deemed "necessary" so it cannot be real, and people will look to more and more convoluted theories as to why Sakurai is pulling our leg.
Already. Who would have seen Ridley coming after Sakurai said he was "too big". Who would have seen Castlevania characters coming when everyone was talking more about the likes of Rayman, Shovel Knight, Shantae, and Kingdom Hearts over this franchise? Who could have predicted Dark Samus making it in despite the most wanted Metroid character for 17 years still having not made it in and her own time in the sun being over for a decade? Who would have predicted Chrom after Smash 4's official material outright mocked the character and Sakurai saying the character brought nothing special to the table? Who would have predicted that our Mario newcomer would be Daisy over the likes of Toad, Geno, Paper Mario, Waluigi, and Captain Toad?
Even when Simon was leaked, who saw a second Castlevania character coming?
The speculators get a lot of things right, but in the end there are many things unknown to us, and we do not understand how the selection process for one game might be different for the current one.
If I were to show the present roster to myself six months ago, I would never have believed it. Too many absurd character choices. However, in the context of Sakurai's new parameters for Ultimate, the characters make perfect sense.
This does not mean "expect out there characters", but rather step outside the expectations of the "crowd" for what we might ultimately get.
Just look now at "Geno, Isaac, and Skull Kid are the new trinity!!!1111". A few weeks ago, Skull Kid was barely a blip. Now due to being seen as "likely" he is seen as likely. Isaac had a cult following too, but the moment people looked at that Ratholos screenshot, they went all "oomgg Issic comfirmed!!!!!".
The biggest loudmouths formulate their own consensus and shout it over and over and over again, and within this maelstrom., people lose sight of their own inner wisdom or intuition. This is perhaps a statement on social media in general though.
"Absorb what is useful. Reject what is useless. Add what is essentially your own." - Bruce Lee