You cant ever wonder 'what if', because it happens for a reason, imo. In my example, I rotated at 2 programs on a sub-i and AI and I received interviews from neither program. One doesn't really take DO students, and the other has a cutoff score, which I scored almost 2sds above, on both 1 and 2, no red flags, some research with pub/poster/present/grant.
My evals from the chairs of medicine at one and chair of pulm/icu were 'honored' and I got a letter from one, which I used in eras, that most interviewers commented on very favorably. With that, I got along well with my residents, they gave me great feedback at my work ethic and knowledge base and gave me their #s to catch up, when I went there for my interview.
So, I think to myself, I kind of dodged a bullet honestly because had I gone to either, I'd live in a major city with no realistic access to nature(huge for me) because I'd be a fanboy of the program itself and not the city/environment/living situation/proximity to family and friends. That's my n=1. I was a big advocate for doing away rotations until my experience.
Idk, things work out for a reason, I believe, whether you match 1 or 6, you match.