As a potential customer and now owner of the plane, I will admit I was disappointed when I read wing flex wasn't modelled. I did in the end buy it, but it did make me seriously think twice, and I sure hope it is added.
I get "wing flex" is an easy (and now common) joke in our FS world, but also to simulate the plane to such a nice detail and ignore that a 95 foot wide slab of relatively thin metal doesn't flex is silly too. The simple gauges flounder about, so to me so should the wings a bit. With no wing flex, I feel like I am simply flying one of the static library objects honestly. I enjoy realistic procedures, but also watching outside or passenger views etc., particularly at this price point. Static wings are simply disappointing and show the dev is either lazy or ran out of time or resources. Obviously in this case, you haven't had the time yet, as you did a lot so well.
I bought the plane despite not having wing flex, but I did hesitate once reading this feature was lacking. I don't think I'm alone. Please add them :-)
Take care all!