To answer the more general questions: Penn has a GREAT path residency. I chose it once and would choose it again. Work hours and resident satisfaction have undergone massive changes since the bad old days of 4+ years ago, proving that the department is very very responsive to resident issues. Almost to a fault (having seen the beneficial effects of "tough love" in some other programs and specialties). The program is relatively benign, for a big institution, and the resident group is extremely social and friendly. There is a good mix of research and non research oriented people.
There is a new program director in place; the previous director has stepped down after ten years of nonstop advocacy for residents with very beneficial results. The new director is very well liked, is well known in pathology education circles and will do a good job. The new department chair has been named and will be in place by July 1. So some of the transitional issues that have been mentioned will become non-issues very soon.