Back in the 1960s when I was working for a newspaper, I was using two Nikon F cameras. In the early 1970s, when the Nikon F2 was first introduced, I tried one. Some of the features I liked were:
Motor drive - interchangeable from one F2 body to another instead being custom made for each F body.
Shutter release - F2 position was better ergonomically
Hinged back on F2 was better than removable F back
Mirror lockup on F2 did not require loss of one frame like F
After using the F2 for a while, I replaced my two Nikon F cameras with two F2 cameras and never regretted that decision. In fact, I still use one of the two Nikon F2 bodies that I purchased back in 1972. I replaced the other body that I purchased back in 1972 after I dropped it on concrete.
Nikon F2 by
Narsuitus, on Flickr