Back to the original point.....
A graduate degree is great for someone who wants to work in upper level management in any field. However, one can't ignore the economics: grad school is expensive, and if it isn't going to (at the very least) pay for itself in a reasonable amount of time, it is hard to justify financially.
As for a master's degree being required, al la "paramedic practitioner" or something like that......I think we are a very long way from that happening on a large scale. I suppose I wouldn't be too surprised to see something like a pre-hospital PA role developed and utilized somewhere, but I don't see that being widespread for some time, if ever. And it would make far more sense to simply use the PA educational and licensure structure that already exists, rather than develop whole new educational paradigm.
The demand for relatively low-skilled "ALS techs" to shuttle people around is growing, and it simply doesn't require a lot of high-level understanding.
For right now let's just focus on making an associate's degree with college-level A&P a requirement, and then go from there.