I can see the filename in the title if turned on, but I'd really like to see the full path. Many of us stick with the file names out of our cameras, which doesn't mean a whole lot, but the containing folder(s) probably do.
Also, I wish the full path that is in the taskbar was easier to read. I'm on 1920x1200 resolution and I don't have a problem with that usually, but you have white text over a light grey background (it's the top half of the two-tone bar).
I would actually prefer the path to be larger type and down center of the task bar.. perhaps another color option? This is probably a bigger can of worms, but what if the taskbar was modular or customizable? I see modular happening just like the Windows taskbar. Or it could be as simple as an XML file to drop in which buttons and info display you want.