1. I think DDS/DPMs would disagree that you are on their same level (and still below physicians - your words, not mine).
2. I haven't seen much evidence that the relationship between DO/MDs and DCs is getting any better. Frankly, I think it's because, contrary to what you say, the DC community isn't taking strides to make education evidence based and uniform. I know you've stated that your university is moving toward this model (which is a good thing), but I don't think many universities care to do this (mainly because they money/students keep coming ... so who cares)
3. I really don't think DCs specialize. If you think about it, spinal manipulation is what you practice ... and, to me, specialization above that doesn't really make sense. I actually think it's pretty dangerous for DCs to complete what they consider residencies and advertise as Neurological, Radiology, etc, experts. Frankly, it's confusing to patients ... and I think this merge into trying to specialize, advertising as 'family practitioners,' etc is precisely the reason why a. the specialty isn't coming to accept their role in health care and b. why newly minted DO/MDs will have very little (even less) incentives to refer to DCs.
Again though ... this is completely off topic for this thread.