The number of steps involved in opening space or tab delimited text data files
in Calc is in my experience the most frustrating feature of OO.  It
unnecessarily complicates the task during repeated analysis on multiple data
files.  However, text file opened from Calc is most likely data, on Writer is
most likely text.  Dragging and dropping a text file into Calc is already
implemented consistently with this assumption, and it brings up Calc's text
import dialog.  If OO must have a single Open dialog that doesn't remember what
application it was called from, how about adding an Import function to the File
menu where file opened are assumed to be data files?