Another old model that is dying is the Sage ont he Stage passively filling up young brains with wisdom. This is being replaced by active learning, especially the latest trend, TBL. For that, you still need a classroom because the student come and work with each other. There is data that shows this helps retain info longer.
So yeah, students could be learning things online, but to better assess them (and teach them) they need to show up. And that's just for the basic science didactics...you still have to show up for labs and all the "what doctors do stuff".
There's not going to be a single model of medical education, given by ten people beamed nationwide. Just don't go there. At best, you'll find Faculty agree on 80% of what's important, and fight tooth and nail over the other 20%. And that's just within the same discipline. Trying to get people to agree across disciplines is like herding cats.
Another model of medical education that seems to be growing is the hospital with the med school attached (not the other way around). Kaiser, CalU, Geisinger, Hofstra, and to some extent Seton Hall follow this. Mayo and Case pioneered it.
And please get out of the mindset that medical education stops at Step I. It's a four year process.
And also stop with the n=1 examples. They don't apply nationwide. Most of the residents and attendings on SDN have stated that while they like teaching students, they are still a significant drag on thier clinical time.