It's interesting that folks are looking into the possibilities. Perhaps it will find itself useful for training and in other different ways.
One idea came to mind:
Health care is a hot topic in the US. I'm old enough to remember family doctors making house calls, in the late 60's and very early 70's, in my home town in upstate NY. Judging by the lack of local medical help in the rural town where I am now, there aren't enough doctors to go around. Some towns have sponsored (new?) doctors, paying their education bill, providing facilities, a place to live, and other basic necessities.
Suppose more communities did this, creating a larger market for doctors. Such virtualization tools could enable doctors to make house calls again, and even give them some side income. Doctors could "see" patients via SL, perhaps for $L, during slow times between RL, local patients.
Develop an inexpensive USB dongle that can measure pulse, BP, temp, etc, and distribute them widely and with a lifetime guarantee. Have it capable of storing medical records for a family.
There will be privacy issues, the storage and sharing of medical records, proxies, filters, and trust, but those are things that will need to be dealt with for any "Health Care Reform" to happen. No more filling out paperwork while in the waiting room, but the internet has a great "magazine rack".