T_A_N_K: Thanks for your comments. I'm waiting to complete some current projects before steping into a new ones. Yes, armpits vents are already in prototype stage for my next E1 version. First, it will be implemented into our current Combat Anorak.
At the moment, the Issued CADPAT AR is almost impossible to get (And don't talk about Cordura). But raw Multicam fabric is easier. I'll see what kind of feedbacks I will receive before getting into that.