I had an interesting thought earlier...
Looking at the reveals leading up to Ultimate's release, the non-DLC characters being added had a pattern. Inklings, Ridley, and Daisy. A big new IP with 2 of the largest fan requests all in one swoop. It went from there to the 5 in August, King K. Rool, Chrom, and Dark Samus, and the Smash "revival" IP, Castlevania with the Belmonts. Then, towards the end, the big heavy hitters for casual players, Isabelle and Incineroar, with Ken as a final echo slot.
Now from a business standpoint this makes a lot of sense. Initiating the fan picks first gets people excited and talking about the game, spreading the news and showing off what's there and talking about what might come. Saving the more casual gamer/children fan picks for last means they won't have time to forget about the game before it releases. That's what sells Nintendo the most copies of the game-- essentially, getting the hardcore fans interested and talking early, and then making a push towards the end with more casual stuff to sell tons of copies all at once.
Here's the thing... What if DLC character reveals follow that same structure? Looking at what Vergeben is saying, for example, a Square Enix character, a Minecraft character, +3 others. I think this can follow the exact same pattern of reveals as the pre-release information:
1st reveal: Geno, the long time fan favourite
2nd-4th reveal: another fan choice like Banjo Kazooie perhaps, + 2 more, newer IP's (Maybe Elma from Chronicles X or Bandana Dee)
5th reveal: Steve from Minecraft, to appeal to a wider mass of gamers.
Of course this isn't to say there's any -real- evidence for this, it's purely a guess... But boy is it nice that the pieces of the puzzle fit together like that.