Warrior files can be like trying to make a "Far East" or "Merc Nation" file.
The difference with warrior is at least you have more choices, and oddly enough both Far East and Merc Nation are often warriors as well.
Personally I went with making a merc nation file as my warrior file, and it had good results in testing.
It's still a warrior file, as it runs 5 different warriors, so in essence its both.
While a purist might not think so, I suppose it comes down to how many units are required to be in a file for that file to fit "X" theme.
However I'd point out certain files aren't pure, but I doubt anyone would say they are not a certain file type at times.
Is EN not EN because they run only 2-4 lycans? Not EN because it only has EX Riza, Eskatia and Succubus only?
Depends on your preference I suppose.
For me any file that runs 3 (x3) or more could easily be counted as a theme, so don't sell warriors short just because you aren't running all "warriors".