Arranged again by my program, wow my total score has increased a lot since a short time ago when I last posted this. I've really added some nice scores to the list and the whole list is good stuff now.

Punch You (74) 19 goods.
Starwolf (72) 13 goods.
Caprice (73) 18 goods.
S.E.B. in B.E.D. (69) 8 goods.
Runny Mornings (SGX Mix) (73) 24 goods.
0 (piano version) (66) 1 goods.
The Divine Suicide of K [Heavy] (68) 12 goods.
Within Life (66) 3 goods.
For FFR (67) 8 goods.
Total score= 8311.1175
Division= 4

Sakurai has made many comments about the size of the roster. In the initial interview, he said he could have 50 characters. But two other times he made it sound like it would be about as big as in brawl. So considering brawl had 35 slots, taking the average of these would mean about 40 slots. I think many people are way overly optimistic and this is actually rather realistic. Using this, I have come up with a roster that includes a little of everything on the newcomer side that I think would please as many people as possible given the constraints.

Brawl's roster
Cut Lucario, Sonic, and Snake

Sakurai said that Megaman should be thought of as the special case for 3rd party characters. And Sonic and Snake were guests so I wouldn't be surprised if they go away. Lucario is pretty much just worse than Mewtwo in almost every way if Mewtwo is used to his fullest potential, and Pokemon sort of has too many characters to keep both. He's one of the few characters barely anyone seems to know and even if you don't like Mewtwo, it'd still be better to give some other Pokemon a chance.

+Wii Fit Trainer
+Villager
+Megaman
+Ridley (The villain + hinted at so much that Sakurai's either trolling or preparing us for a big surprise, and he's probably not trolling.)
+Palutena (The [mostly] new)
+Mewtwo (The returning that almost everyone wants)
+Takamaru (The old)
+Little Mac (The timeless)

Let me know what you guys think. And don't say it should just straight up have more characters since I don't think that's realistic and you at least won't change my mind about that.

I made up a much smarter version of my program that would attempt to determine how good people are at this game. It uses a player's best scores which aren't necessarily the ones with the fewest goods. It now came up with this list of the best players:

1. DossarLX ODI: 17658.4725
2. Samurai7694: 17011.55
3. TC_Halogen: 16812.045
4. smartdude1212: 16619.4825
5. AlexDest: 16613.815
6. leonid: 16546.9375
7. One Winged Angel: 16521.1275
8. EzExZeRo7497: 16493.86
9. xXOpkillerXx: 16266.555
10. Xayphon: 15872.925
11. Staiain: 15821.5275
12. LongGone: 15722.4175
13. Dynam0: 15674.8675
14. Bluearrowll: 15527.995
15. Ziergdsx18: 15515.0825
16. ~Zeta~: 15406.0475
17. kjwkjw: 15097.675

And here are what it says are my best scores, from best to worst, and my total score.

Punch You (74) 19 goods.
Starwolf (72) 13 goods.
0 (piano version) (66) 1 goods.
Within Life (66) 3 goods.
For FFR (67) 8 goods.
Colorful Course (66) 9 goods.
Romance in the Club feat. Liquido (70) 18 goods.
K8107 (65) 4 goods.
Rising Blue Lightning (64) 5 goods.
Total score= 8107.7175
Division= 4

And although it doesn't consider token songs, I can manually add them in and then it gives me this list worth a few more points instead. Wow I have so many scores jam-packed so close together it's only a little higher of a total even with a lot of the list being token songs.

Punch You (74) 19 goods.
Starwolf (72) 13 goods.
The Bird's Concrete Nosedive (80) 53 goods.
0 (piano version) (66) 1 goods.
Gaussian Blur (72) 22 goods.
Within Life (66) 3 goods.
Nanairopanda v2 (71) 20 goods.
For FFR (67) 8 goods.
Colorful Course (66) 9 goods.
Total score= 8174.7525
Division= 4

A tier - for extremely likely characters: (~80%+)
Mewtwo
Palutena

B tier - for likely characters: (~50-79%)
Little Mac
King K. Rool
Takamaru

C tier - for characters with a decent chance: (~20-49%)
Tingle
Saki Amamiya
Sylveon
Krystal
Isaac
Samurai Goroh
Black Shadow
Shulk
Toad
Andy

D tier - for characters with a slight chance: (~2-19%)
Tetra/Toon Zelda
Ray 01/Ray Mk III
Chrom (his voice actor gave away that he didn't do anything in this game yet. And seeing Sakurai's latest comment already talking about balance, the initial version of the characters should be essentially done since balance shouldn't be done when more characters are still being added. As such, I really doubt he'll be playable, although tons of people seem to think he's super likely. He's also very lacking in terms of uniqueness.)
Anna
Micaiah
Avatar
Tharja
Lucina
Roy
Caeda
Lyn
Captain Syrup
Medusa
Dixie Kong
Starfy
Chibi Robo
Mach Rider
Muddy Mole

E tier - for the characters with almost no chance: (~1%)
King Hippo
Impa
Vaati
Isa Jo
Balloon Fighter
Alice
Ruka Minazuku
Ridley (Almost surely part of a stage at this point.)
Anthony Higgs
Dark Samus
Bowser Jr.
Koopalings
Waluigi
Paper Mario
Mii (Can't be any higher than this when Nintendo is so strongly against the idea since they are firmly against people's miis getting tortured and/or killed.)
Ashley
Mona
Maxwell
Bandana Dee
Alexandra Rovias
Quote (I don't even remember who this is lolol)
Duck Hunt Dog
Elite Beat Agent

Any character I didn't list is assumed to not even have enough chance to bother listing. Also 3rd parties are not listed but I really wouldn't expect many of them at this point.

New list of my best scores:
0 (piano version) (66) 1 goods.
XTC Hill Zone Act 24.7 (65) 4 goods. *new*
For FFR (67) 8 goods.
Starwolf (72) 13 goods.
Punch You (74) 19 goods. *new*
Romance in the Club feat. Liquido (70) 18 goods.
Undiscovered Colors (70) 26 goods.
Hajnal (69) 20 goods.
Midnight Dragon (69) 19 goods.
3020 (74) 43 goods. *new*
Total score= 3778