Yes my clavicle sloped down and my shoulders rolled forward
I went to my teams physical therapist and she pointed out that the bottom and inside edge of my shoulder blade rests in such a way that it sticks out of my back. This implied that my shoulder blades were unstable which is a main cause of "shoulder impingement syndrome" which they are sure is my problem. So the plan was to strengthen the upper traps and serratus and lower traps to stabilize my shoulder blades and stop my shoulder pain. My body responded to the upper trap shrugs extremely well and I improved by about 45% over the course of 6 weeks. I now do a couple sets every couple days to maintain strength but any of my upper trap problems I would consider managed/solved. It was a huge help and I recommend it.

The serratus and lower trap stuff isnt doing its job however. I cant flatten out that shoulder blade. This is probably an issue with my medial scalene putting pressure on my long thoracic nerve. Maybe not though, who knows.

Im positive if I fix my shoulder blade position, whether that be from physio, botox or surgery to free up my LTN, I will be 100% cured.

Im ranting a bit but what im trying to say is that there is a lot of focus on changing the first rib position and adjusting the first rib, when in my opinion, the clavicle/scapula complex is much easier to manipulate with upper trap/serratus/lower trap strengthening