Well, concerning French subjects, they just released the Salmson so there is hope! I would like to see some Italian subjects myself but not much hope there (maybe the HD1)
I think they said way back that they were going to avoid doing aircraft that were already available in 1/32 from other manufacturers - that may have impacted what they are releasing on French subjects? If I recall the following are already available in 1/32 (yes not as good as WNW though):
Spad 13
Spad 7
Nieuports 11, 16, 17, 24, 27, 28
So that has the French WW1 fighter subject already pretty covered in 1/32? I sure wouldnt mind WNW doing a Spad 13 or a N17 though....