Or hell, being able to fully customize the CSS - not just sorting, but also including the ability to resize icons (would need multiple CSS slots - including a space for the default one - and a CSS editor though, so one doesn't need to fear screwing things up)
And yes I'm referring to my MW, Dota 2 (the pics are 6 and 2 years old respectively, so several patches out of date, but still proves my point):
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View attachment 328413
Normal CSS looks like this, with the characters / heroes sorted by primary attribute (Strength / Agility / Intelligence), then by alphabetical order. And it has something Smash could also use - default categories by character type (chosing the category highlights the specific heroes, for example Support highlight Support heroes) and the ability to customize categories:
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Outside of the online / ranking system (yeah, it's been beaten to hell and back at this point, but for good reason) which are you thinking of primarily if I may ask that?