(wall)
DGF B > 3B >W! > 2A+BB > 3B > W! > iMCF > RCC > bA = 126 dmg. 3B instead of 6K here because 6K sometimes makes the opponent BT.
DGF B > 3B >W! > 2A+BB > 3B > W! > 66aA+B+K > iMCF > RCC > bA = 153 dmg, 0.5 meter
DGF B > 3B >W! > 2A+BB > 6K > W! > iMCF > 66B > DNK > 3B = 144 dmg. Sometimes the last hit of the DNK doesn't connect, making it 123 dmg. Not sure why (someone else test too?)
DGF B > 3B >W! > 2A+BB > 6K > W! > 66aA+B+K > iMCF > 66B > DNK > 3B = 158 dmg, 0.5 meter
DGF B > 3B >W! > 2A+BB > 6K > W! > 66aA+B+K > iMCF > RCC > 3B > a:B+K > DNK > 2K = 161 dmg, 0.5 meter. Props if you can do this in an actual match.
22B+K > W! > iMCF > RCC > 3B > 2A+BB > 66B > 3B > 6K = 126 dmg
22B+K > W! > iMCF > RCC > 3B > 2A+BB > 66B > DNK > 3B = 137 dmg
Replace 6K with 3B if the opponent is *not* slightly to Yoshi's right before the wall splat, or you'll 6K him/her into space and not wall. 6K best used at corners between walls.
If you've spent your iMCF stun just before the wall:
(CH) iMCF > RCC > 3B > W! > 2A+BB > 6K > W! > 66B > DNK > 3B = 117 dmg
(CH) a:B+K > iMCF > RCC > 3B > W! > 2A+BB > 6K > W! > 66B > DNK > 3B = 109 dmg (somehow it's less than without the a:B+K)
(CH) iMCF > RCC > 3B > W! > 2A+BB > 6K > W! > 3B > a:B+K > DNK > 2K = 124 dmg
A+B > iMCF > RCC > 3B > W! > 3B > W! > 3B > a:B+K > DNK > 2K = 114 dmg (can't do 2A+BB because the A+B stun is used)
(open)
(CH) a:B+K > iMCF > RCC > 3AbA+B+K > a:B+K > DNK > 3B = 93 dmg, 0.5 meter. Big characters on open space. Use for RO
(CH) a:B+K > iMCF > RCC > 3B > a:B+K > DNK, 2K = 90 dmg, which makes the above one kind of pointless, really.
Except he steps forward for a longer distance if you can RO. Note that for some reason, 3B is blockable hence the 2K ender.
(CH) a:B+K > iMCF > RCC > bA = 90 dmg
(CH) a:B+K > iMCF > RCC > 3B > 6K =
93-4 87 dmg
<edit> the above combo does 87. Sorry guys. So RCC > bA does more than 3B > 6K but the difference is almost negligible.
Compare with:
(CH) a:B+K > iMCF > 66B > DNK > 3B = 88 dmg.
So having to RCC or no, you still get roughly the same amount of damage. Except you get to throw in deathcopter trap instead of DNK if you want. DNK after a:B+K doesn't work without wall with LX, Lizzy, works sometimes on Natsu, should work on most big characters, doesn't work on Asty. Haven't tested the full roster yet.
<edit> From lolo's post:
3B seems to be more important than ever, it's somewhat safer than SCIV, and we can deal some damaga out of it.
So far you can do 6K, 4A series and a:B+K, let's focus on the last one.
You can get free DNK, 2K follow up on some chars, so this post covers the use of DNK, x = works fine, i= works irregulary and na= doesn't work.
So here is the list for DNK option.
Pat x
Zwei x
Lei i
Nat x
Ezio x
Rap x
Viola x
Phyrra i
Sieg i
Hilde x
Xiba x
Ivy na
Cerv x
Aeon na
Tira x
Nmare na
Mitsu x
Maxi i
Voldo na
Asta na
a Pat x
Algol i
o Phyrra i
Oh yeah, if you happen to FLE K near a wall such that the other guy splats and you can't A+B grab, you'll get a FLE K > W! > DGF K > DNK > 3B instead for slightly less dmg.