I have a mixed opinion on this. In particular, I don't think we really need to create more skilled medical professionals, we just need to change the way they work.
Most of doctors have exposure to the basics of intubating and ventilation through medical school. Those without direct critical care experience would likely be absolutely terrible at it. However, they all still have the baseline knowledge. They're able to assess patients, read charts, and report on vitals.
I just asked my wife (a psychiatry resident) if she could intubate/ventilate a patient. Here response was, "If I were the last person alive, I could intubate. You wouldn't want me to do it, but I could do it. I don't know how to run a vent, but I'm sure I could figure it out if I consulted with a doctor/therapist that does". I think most non-critical care doctors would express the same opinion.
What I'm getting at is we have a large amount of doctors that can act as multipliers for intensivists, hospitalist, ER docs, and pulmonologists. They are able to do much of the time consuming work while relying on specialists to guide overall care plan and intervene the on most challenging cases.
----
Given how medicine works, the chances of actually seeing this in action are low. But....it's an options.