I don't want to sound spoiled or anything, but if the "box theory" is true, the number of unique newcomers (even w/ all the circumstances) seems kinda... small.
Unique Newcomers
Inkling
Ridley
Simon
King K. Rool
Isabelle (who is mostly unique)
A 6th newcomer
NEW Echoes (movesets are heavily based on other characters)
Daisy
Richter
Chrom
Dark Samus
A 5th echo (probably Ken)
Returning Veterans (movesets are mostly kept intact from previous installments)
Ice Climbers
Pichu
Young Link
Snake
Squritle
Ivysaur
Wolf
That's a total of 18 characters up from Smash 4 (I'm counting Squirtle and Ivysaur separately) w/ 12 being based on past movesets. No characters cut. 67% of the increased roster are characters w/ moves we've seen before or they're literally characters we've seen before (just not for a long time).
In comparison the base roster of Smash 4, compared to Brawl, was up 17 characters (counting Miss separately) w/ only 2 being based on past movesets. 5 characters were cut from Brawl (Lucas did come back later). Only 12% of the increased roster are characters w/ moves we've seen before.
It's also good to note that Smash 4 (which was 2 separate games) and Ultimate had a similar amount of development time.
I get that Ultimate's main draw is to honor the series as a whole. But in terms of unique newcomers, 6 seems extremely low; Melee had more unique newcomers and was developed in a SIGNIFICANTLY smaller period of time. Heck, Melee would still have added more clone characters than Ultimate, and their clones we're more unique than the echo fighters we've got now.
Stages are a MUCH bigger offender of this, but I'll save that for a later post.
Now if you told me 6 newcomers post-E3, pre-Smash Direct, I wouldn't be too surprised. But after revealing 2 uniques and 3 echoes in a single direct, many people, including myself, were conditioned to believe that they'll be many more characters (or at the very least more echoes) to be revealed.
If the box theory is true, I honestly don't understand why they decided to reveal all of these characters sooner than later, or spacing them out more evenly. They allowed us to speculate about all of these characters that we expect to make in it, but the remaining roster may be much more limited in reality.
Even Vergeben would be proven wrong, since he still has 3 newcomers he leaked: Ken, a Gen 7 Pokemon, and a Square rep. None of the Smash info he leaked has been debunked and the majority of his Smash leaks have been true.
Again this could all be proven false. It just seems weird to me to go this route if this is true. Unless there's a MAJOR variety of enjoyable modes (not like Smash Tour), including some sort of story. I honestly can't see them going this route. And I hope they don't.