Looks pretty good! I'm hoping that this list isn't including actual quantity of items?

I'd add a smaller syringe if possible (10 or 20 cc). good for irrigating wounds (filtered water is fine in the backcountry). I read somewhere that the 60cc syringe doesn't have the ideal pressure for cleaning while preserving tissues.

Maybe a SAM splint. I know BSA first aid is all about sticks and backpack straps for a splint, but seriously, that's pretty ghetto.

Also, see if your Asst scoutmasters can make it mandatory for everyone to carry After Bite. Works great on mosquitoe bites. then you don't have to pack them in the FAK.