NATO appears just to be the U.S. It would be interesting if you could select squads/units of different nationalities from the NATO factions and other special forces within those nations. E.g. SAS, SBS, KSK. Different uniforms and voices would be great.
Being able to select in editor a BLUFOR, Rifleman, German. would make it more interesting for players who like to play other factions as the U.S.
I know it says in the description that the contingent is the U.S. 7th infantry division. But it also says 'NATO’s Mediterranean Joint Force', which makes me think there should be more in the way of nationalities. Could just use the voices from the B.A.F expansion of Arma 2 for Britain