Depends on what I'm building the character to do. Number of good saves (and where the good saves are located) probably never drops below third. Class skill list is generally toward, if not at, the bottom. Really though, this stuff almost always takes a backseat in considerations relative to class abilities. What sort of balance issues have you that you found this question pertinent? Oh, and BAB is kinda swingy, either being very important, or not very important, so first/second, or fifth-ish.