Elmira's hospital, Arnot Ogden Medical Center has been a LECOM clinical campus since 2013. a big chunk of people will likely stay there for rotations in 3rd year. It has LECOM affiliated residency programs (first started in 2012) in GenSurg, IM, FM, EM, Rads, and Psych all of which I believe are now ACGME accredited, as well as a few fellowships. That said, it cannot support the whole class, there are always 1-2 rotations that have to be done in Erie, and just like anywhere else, it has its ups and downs.
The new med school campus is situated on the Elmira College campus, with supposedly new facilities. From what I heard back in the day, it was slated to be a PBL-only campus with a similar setup as LECOM at Seton Hill. LECOM has a tendency to scavenge professors from other campuses, so its likely some will be already familiar with the process, and some will also be staff/faculty that are already at AOMC's residencies, but there will likely be new faculty as well. That means it probably won't have too many kinks to work out, but it will have some as a new school.
Generally speaking it is always safer to go to an established program, and there will absolutely be changes that may be disruptive to your learning. I would consider the Elmira campus a safer option than other brand new schools, but not safer than already established schools, preferably ones that have already graduated a medical school class.
