Yes and no. I could carry more now that I know more/have higher medical authority. But, I don't - mainly for practical reasons. No point carrying intubation gear if I don't plan on putting someone on a ventilator, right?

Sometimes, the more you know, the less you should carry.

Pick basic stuff. Blisters, minor bleeding (I gaurantee you'll get more use out of bandaids than trauma pads), some 4x4's, some tape, some neosporin. If you feel like an ACE wrap and a trauma bandage, fine. Otherwise, I'd leave 80% of most kits at home.

If someone stops breathing 20 miles from the trailhead, you're SOL. If you want to try CPR for a while, fine, but that person likely won't be walking out of there. Burns don't need burn dressings, just clean dressings. Bandages can be left in place while you evac someone if it's a decent bleed/laceration/burn/etc. Some cord and a few sticks makes a decent splint; a solid branch a passable crutch.

I carry a AMK 0.9 or some little thing. I threw in 1 ACE, 1 trauma bandage, and a pair of scissors. I've rarely used anything but neosporin or bandaids. If something bad happens, I'll be improving.