I think you guys are missing the point. Nobody is saying take a lot of medical equipment. We have been saying to take a tourniquet. I also include a chest seal and decompression needle. In total, this amounts to about 6 or 7 ounces. Put it into perspective. Luke, you would rather pack around the excess material of an EMR2 in daypack mode over a nomad because of the convenience of strap management. The weight of a tourniquet is a third of what you pack for convenience sake, but could be the difference between life or death.
I did risk management for many years, I understand the trade offs that you have to make. My thought process is asking, what can kill me that I can mitigate for 24-36 hours before help can arrive in the back country? Massive hemorraging from limbs and a thoracic puncture are about it. A heart attack? If it is mild I may make it without major intervention. If it is massive, even having an AED will not help as I would never make it to the hospital in time even with the AED. The timeline usually ends after the first hour. So I don't worry about that. Major head trauma? Same thing, either it will be mild enough for me to wait or it will be massive and I will be too far from medical help. Really no in between for that either. Internal bleeding? Probably not going to make it if the medivac goes past a couple hours.
So I focus on what I can mitigate for life threatening injuries. Think that you only have to worry about clipping an artery or puncturing the thoracic cavity in combat? Far from the truth. A bad spill down a wooded or rocky hillside can accomplish either. Heck, a bad broken limb can nick an artery as well, especially a femoral break because of the tension of the muscles in the legs.
Becca takes a very extensive medkit, so why not add a tourniquet? Improvising one is not as simple in the moment as it seems. Manual pressure is effective if you are able to do it. In training We tested to see how effective it can be. Arms were fairly easy. Legs though? I was 180 lb, had my full weight on the guys inner thigh on one knee. He still had a pulse in his foot. Not to mention that it was painful as hell and he couldn't stay still. Tourniquets are so much better. As far as training, the OP said training was a part, so I thought it went without saying.
I guess what it comes down to is, would you be ok dieing, or worse, watching some else die, because of 6 ounces?