You should probably post a picture. Also, consider whether that is a movement that you are often likely to make while wearing a dress shirt (e.g. I infrequently shoot hoops in a collared shirt so I don't have my shirts cut with that function in mind).
Ideally yes but I'm not sure exactly what gets recorded with each order. I would love to have more information so that, as you say, I could do a better job of micromanaging my orders. I'm a bit neurotic about consistency.A few times now I have said "same as order XXXX" but have recieved different results (not attributable to fabric differences) so I have been using order numbers only to refer to fit and restating all of my other details with each order.
I find that the fabric itself also has a profound impact on the perceived stiffness. I have unlined shirts in heavier fabrics that maintain their collar shape better than some of my medium fused collars in lighter fabrics. It's always challenging to place a shirt order and get a consistent result, especially when the Luxire site doesn't always provide information about the fabric weight, thickness, stiffness, etc.
Just placed an order asking Luxire to reproduce the Ascot Chang Armoury Safari shirt jacket (with a few modifications). I'm excited to see the results.
Was going to order a CruzCoat (@CruzAzul 's design, here) but the Armoury jacket is a little closer to the length and collar that I wanted. Should come out being very similar though.