I loved my F2 and love my F3. The one key feature I feel that is lacking on my F3 is the large F2 type face. I want to be able to read at a an even quicker glance the time or data which I used to do on my F2 because of the type face.
There was an watch face which did a nice attempt at porting the type face to the F3 but I would like to see an improvement on said design.