For the system: There is X, -3, -2, -1, 0, +1, +2, +3, O
X = "Autolose" (Just unwinnable)
O = "Autowin" (You should never be losing if you play the MU right)
-3 to +3 are just applied, when a Match-Up isnt unwinnable for one of the 2 characters, kinda like a scale.
Just look, Mario vs MK is -3 atm... how in the world could the chart-makers let that happen? Its obvious that no matter how good the Mario is, he won't beat an MK that knows the Match-Up.
Thats why I said, first we just focus on which match-ups are unwinnable, and which are "even" (In this case even = Both characters CAN win)
And later on, we decide the actual ratio of the MU.
Ofc. we can just put -4 and +4 instead of X and O. X and O should just be used for the "first phase", where we only decide if in Match-Up-XYZ both characters can win, or if one of the characters should always win. (We can use - for MUs where both charas can win, the symbols really dont matter).
Did I make it more clear?
The reason I would prefer this, because I think its a lot easier to decide/agree on if a Match-Up is winnable at all, for a character, or unwinnable, if thats not the case.