Great article and I think you cover some use cases. For medicine, there are quite a few others; the examples you list aren't the most compelling, though they do show where VR can be applied. However, what VR may not be able to do in medicine, it will be able to do in education, and I'm not talking about universities, which are usually the last to pick up a trend. VR will have a big impact on education, as it allows for simulations in learning that feel real to some of the senses (eyes and ears).
People working on VR should consider security (see examples listed in the article) and they should also be cautious about using any VR that puts their phone near their head. Those signals may not be safe.
RE: Tech News: Is VR All It's Really Cracked Up to Be?