the 5 levels are just not enough as they are already used for the normal gameplay,
the ability to tag a user in a slightly positive or negative way would fix this.
as example, there are a number of players that are competitors, they are not -5 as they just do what we do, but it would be nice to have them tagged/colored anyway. so -1 with a yellow color or +1 in lime would fix that.
in pvp such standings could be use to “mark” a corp/player semi-friendly but have the standing not impact settings based on standings.