1) It should be nice if open dialog on build options / directories remembers the last opened folder. It always starts from project directory...
2) Why don't you allow multiple selection on listbox on build dialog (linker / directories / etc...)?
one question though, what's the purpose in this case to start with the last added directory. One is adding directories for linker, compiler (include paths), resource compiler. It is well possible that the list of directories is scattered aroudn the hard drive, so the offset might be as big as starting from the project dir, as starting from the last selected one.
To be honest, I hardly see any added value, please enlighten me ;-)
And when I see the light I can implement.