Thank you!
1. If research is a significant part of your application & what you did, then I see no reason to take it out. I didn't take the blurb about my research out of my PS. As a matter of fact, a couple DO schools I interviewed at asked me about my research; one in detail. So I wouldn't say that DO schools 'aren't interested' in research.
2. NYCOM has the high rep because we do have a high attrition rate. I'm not sure why, as I'd said earlier. Those of us who made it through the exams, didn't seem to find them super challenging (definitely not easy by any means) and people who had extenuating circumstances were able to work with NYCOM and come up with a mutual solution in terms of how to proceed.
3. It probably won't eliminate DO/MD discrimination but I believe its a step in the right direction. For example, one of my buddies did significant cardio research at a major academic hospital in NYC and left a great impression on his PI & one of the program directors. But the program director told him straight up that they don't take DOs & as much as he would love to have him, the rest of the committee won't agree to it. Issues like that, may be solved as DO-friendly personnel will have more leverage in these situations to make an argument. Obviously, these are my opinions and I may be completely off.
4. I believe that as long as you have an MPH from a strong program, and network with that, you can open many doors for yourself in healthcare policy / public health in general, regardless of the nature of your medical degree.