I think the word "doctorate" is a misnomer here. It's really only an additional year of study, and the good programs already emphasize research. I don't mean to be derogatory, but a professional doctorate is not the same as an academic doctorate (PhD), which is a true research/teaching doctorate. I would think that someone who has a true interest in research/teaching should pursue a PhD in OS. Wasn't OS established in order to provide OT with a true academic research foundation?
From the other side, I can understand that some field equivalence might be found in moving towards a universal OTD (in order to match J.D., Pharm.D., DPT, etc...), but in essence, I just don't really see the difference. An entry level doctoral program, as well as the MS path, prepares a candidate for professional work, and as long as the MS provides that research component, then what would be the difference? Extra tuition, less time in the field, more supposition that the student eventually end up in a teaching position...all of these things detract from the field of practitioners, IMO.
One final point in praise of my eventual program, and hopefully other programs across the nation. I love that my program integrates different disciplinary fields in its faculty (sociology, special education, OS, practicing OT's from various settings and demographics, business/ethics, psychology, etc...), because this reflects the essence of the field of OT, IMO. We are dealing with various factors of the human experience, which requires a motley approach to the study of OT. Simply filtering everyone through one path of study into the research/teaching side of the field might stamp out this rich diversity and subsequently rob us of an education fit to the holism of our field. Just a few of my own thoughts on the subject.