@Medaka444
I see where you are coming from, but you are trying to point out that my viewpoints are arbitrary when they aren't. To clarify, I am reacting to the ideas behind this CSS specifically. The base of my argument isn't to follow the rules of vBrawl CSS or Melee CSS, its simply to apply rules to this one.
Consider: There are 42 characters in the CSS (this includes random). Whoever made this arrangement made the conscious choice to have it be 4 rows with 9, and 1 row with 6, despite the number 42 being easily divisible into a 3x14 arrangement or 6x7 arrangement. Now, the 6x7 would've looked cramped, but 3x14 definitely would have worked. However, for whatever reason, they decided to go with this layout. I am getting the impression that its supposed to be melee esqued, but they could have easily achieved that with a 3x11 and 1x9 (a layout that which have more efficiently used space on the screen)
So when I see the arrangement in the picture, I am trying to understand what was the decision making behind it. There are definitely other choices, so WHY this one? Making the CSS like this creates a visual dichotomy; the 4x9's are the top heavy block being differentiated from the bottom row. Why needlessly bring attention to a bottom row if it isn't going to represent something, right? So my thought process became: the block of 4x9's should represent Nintendo and consist of all their modern franchises, the smaller row will then be a guest row; a row that says "Hey, we aren't usually around but we're in this game" row.
TL;DR: My views are entirely what I believe to be aesthetically pleasing for this arrangement w/ Modern Nintendo comprising the 4x9 rows and Classics/Guests comprising the special row. However, if we want to argue fact, a 3x14 or 3x11 w/ a 1x9 is a better layout because it doesn't create massive margins and would probably allow the icons to be larger.