1. In "Choose a buffer" please sort primary on filename and secondary on pathname.
Imagine you have lots of files like "makefile" open - finding the right one from ChooseABuffer is a pain since they are not sorted.
2. Better still, make this more list List-buffers: Include headers that let me sort.
3. Auto-size the columns to clearly separate the paths from the filenames - its a mess unless all your filenames are short (8.3 or less).
4. Include a text box to let me filter.
5. Make it resizable.