Depends on how you look at it. Right now, the existing DO schools are theoretically accepting the "best" of the applicant lot. Meaning new schools would just add more DOs not necessarily more "competitive" DOs. The DOs at the newer schools would in theory lower the admission standards statistics (as a whole) due to there being more of the applicant pool getting in that is not in the current lot of accepted students (meaning the next standard deviation downard).
While it might be a good thing for the nation and the utopian view of medicine. Many don't like the idea from a personal standpoint.