All my first aid kits at work still come packed with face shields for rescue breaths, it was more like 'if you have to choose between compressions and rescue breaths do the compressions'.
This whole thread really makes me think that the current medical system in CM is just just kinda 'good enough' and there's really a lot of cool stuff and equipment you could add to it in order to make it more interesting. I've heard lots of good things about the BrainMed system in baystation.