Craig,
Wondering if it's possible to display PDF and EPS file types in PM? What of other "illustration-types"? Even if actual preview were not possible, it would be significant to show a file-type icon, similar to the way .wav files are displayed now. Reason being, as we rely more and more on PM as our "graphic librarian" it becomes a pain to toggle between browsers for complex graphic files and the image files used to create them. Again, full display would not be necessary, but knowing something was there (i.e. generic icon) would be a plus.
We currently do display EPS-TIFF files (EPS files that have a TIFF preview in them).
I think that a solution may be to have a dialog where you can list the file extensions of all file types that you want Photo Mechanic to have a "proxy" thumbnail for. You wouldn't be able to do much with them besides copy/move, rename and delete. But maybe this would be good enough?
-Kirk