I'm in favor of keeping the existing policy. Cosplaying is a clear reference to the character cosplayed even if they aren't present, and as such will probably be of interest to a person searching that character.
Posted under General
Granularity-wise the current problem as I see it is there's still no good way to denote who is cosplaying and who is being cosplayed-as. We have this ugly hack in place where a general tag with the name and a _(cosplay) qualifier, but what if you want to exclude that character cosplaying, but do want cosplay of that character?
(Did we discuss globbing and operators for Danbo 2? I don't remember. I'm looking at (char1 -cosplay)+(char1_(cosplay)) pretty much.)
To be basic, if I am understanding correctly.