It would be nice to create a joint action for "select current word", "select current line", "select current paragraph", and "select all". E.g. by pressing <Crl>W the current word is selected. By pressing <Ctrl>W again, the current line is selected, etc.
Also a reverse option would be nice: If the current line is selected, <Ctrl><Shift>W could reverse the selection to the previously highlighted word.
It would simplify the selection commands and one does not need to remember all the different selection commands for "select word", "select line", etc.
The idea comes from IntelliJ IDEA, which has this function.