I am not too sure if this was covered before and I know there are some attributes that still make Soulstones sort a bit wonky. It also appears to apply to SSed equipment.
Anyway, would be great to sort by Group or type.
/sort group would have all of the items in /sw 0 listed together, then below them items in /sw 1 .... regardless of the condition they are in.
/sort type would sort all items of like kind together. all sleeves would be listed together, then all leggings.... regardless of the condition they are in.
perhaps extend to /sortdepot while you are at it?