At the moment I am re-vamping my late war WW1 French army, and will have two regiments (ie 6 battalions) of infantry when they are finished. This will then match the same amount that I already have done for the Germans and British in late war. I'm also finishing the second battalion of Highland infantry for my British army.
But then of course I'll also need some FFL Regiment de Marche in khaki, and probably some of the US black troops who served in the French army too. I already have the figures for those, with a little conversion.
I am also using some of the HaT late war French artillery crew to man two of the de Dion Bouton 75mm AA guns that I have from Early War Minatures - I've nearly finished those and will post pictures on the CTK blog (www.crushthekaiser.blogspot.com)when they are done.
I agree though that we really need that 37mm trench gun!