It's funny that you should post this, because I've noticed this very thing recently. I moved from a large, community-based teaching hospital that was just TEEMING with residents to a smaller, semi-private hospital with less university-affiliation (basically all of our hospitals here have SOME type of university affiliation).
I work NICU, but this is not applicable to one unit- I've found that what you're saying is correct on ALL units. I have discovered that I was actually (and this is my personal opinion, honestly) doing myself a disservice by working at my old facility for as long as I did. I've only been a nurse for 2 years, and I really missed out on a lot of learning opportunities by working with so many residents. This is precisely why (I had a hunch...) I moved to another facility; for me, being as "new" as I am, I wanted to get the most experience I possibly could and boy, let me tell you, I've been flung in there at this new hospital.
In fact, at my old teaching facility, we had this same situation with the RT's as well. They had trainee RT's and RT students in DROVES and managed respiratory care fairly independant of the nursing staff, which I personally didn't like.
Howver, there were benefits as well- the atmosphere is nice, conducive to learning (but you'll have to self-start; it's easy, it seems to me, to rely on the residents and others to do certain aspects of care and then you would, in fact, lose your skills), and having resi's on call was wonderful. They had a real presence on the unit, so you never felt like you were alone.
Pro's, con's. Hard to say. Hopefully you'll love it! Good luck!