If I may respond to these concerns:
1) We admit patients at specific times. Everybody starts at the same time and goes to lunch at the same time. So, if you visit the clinic at the wrong time, you won't see anybody there. lol. Also, keep in mind that there are only D3s and D4s in that 6 stories building and that for the most part, lectures are not held there.
2) Yeah, this was something I'm not really a fan of. However, the driving is not a concern for me. People mostly drive to school anyway, because the public transportation is not the best in the suburb. My concern is that it kind of detaches the upperclassmen from the D1s and D2s.
3) MWU as an org. is pretty established. The med school was the first one built (founded in 1900). Yes, the dental school is new, but that doesn't mean that it has a low quality of education. And, speaking about the patients, I have never heard any upperclassmen complained about not having enough patients. As for the students being not overly happy, I'm not seeing that too. Students get stressed out for sure, but that's just dental school. Depends on when your interview is, students can be overwhelmed by the exams/ boards. lol.
4) It is a private school after all. If you can get into a public school, you should go there. But, to tell you the truth, I haven't had any problem of it being "run like a business." One thing I noticed is that they constantly try to make the "brand" better (e.g. continuous improvement of the facilities and pushing for better boards passing rate over the years). But, as I said, it hasn't been a problem for me. If anything, I will benefit from going to a "good brand" d-school.
Hope this helps.