So, something I wanted to point out.
Smash 64 had 12 characters.
Melee had 14 newcomers with 0 cuts, obviously.
Brawl had 18 newcomers and 5 cuts. Most of which were clones and the last being the controversial Mewtwo. However, Toon Link can be considered as the replacement for Young Link. Food for thought.
Smash For had 15 base newcomers, 17 if you count all 3 Mii's, or 15 again if you don't include Dark Pit and Lucina. and 6 base cuts. Lucas was brought back through DLC alongside 4 more newcomers bringing that total to 21. And the return of Mewtwo and Roy, which wont be included here.
So, what am I trying to say here? Well, we're all expecting around 3ish more newcomers right? Well, what of we're low balling it? Like, take the echoes, we've gotten Richter, Daisy, Chrom, and Dark Samus. Those all probably took the work of 1 character, let's just say that for reference purposes for now. And we've gotten Inkling, Ridley, K. Rool, and Simon, 4. So, those 4 plus the echoes makes 5. Retroactively speaking the minimum amount of newcomers we have gotten in a Smash game is 12 characters. That's the OG 12. Ok, but let's say that don't count. 14 newcomers is the minimum, but let's limit that down to just unique characters. That means we got 9 as our minimum. HOWEVER, let's take in the fact that many of the newer characters had to just be simply ported over with a few frame tweaks. That means that the entirety of the Smash 4 newcomers and DLC took less work than the rest of the cast. 28 characters didnt take much work at all. Wolf, Snake, Ice Climbers, Ivysaur, Squirtle, Pichu, and Young Link were the cut veterans that return this game so they probably took quite a bit. So 8 characters subtracted from that 28, then 5 more characters subtracted for the current newcomers and echoes added in this game. So, that comes out to 15. Ok but let's say licensing was kind of difficult let's make that number 13. 13 characters... BUT HANG ON! Let's say that the new quality of life changes count towards bringing that total character count down. Let's say to 10. I think 10 is the number. Perfectly sitting between the og's 12 and Melee's unique 8. I think we're getting 6 more newcomers. I think echoes CAN be included in that as well so if there's like 8 more echoes then say 4 more characters and etc.
SO, after all that ****. We have 6 potential characters. Who are they? Well...
Inceneroar or Another Gen 7 - Kind of obvious. Leaks leaks leaks. Blah blah blah.
Skull Kid - Long Overdue Zelda Newcomer. Pretty popular. Leaks leaks leaks. Blah blah blah.
Isaac - Most popular character after K. Rool. Possibly tied with Geno. Leaks lea- you get the idea
Geno - Most popular character after(?) Isaac. Possibly tied with Isaac. Leaks.
WHO ARE THE OTHER TWO? Or one if you count the echoes as a 5th newcomer.