Currently when you press PrtScrn it will take a screenshot of the entire screen.  If you push Alt+PrtScrn it will take a screenshot of just the current window.  If you want to do anything more advanced than this (turn on/off pointer, take screenshot of certain area), then you have to open up the screenshot tool first from the main menu, "set up your shot", and then take it.

Wouldn't it be much better if you could just press PrtScrn for *any* kind of shot, on the spur of the moment, and then choose your options after the fact?

I'm not sure how the screenshot tool works internally (or I would write the damn thing myself, as it says in the source), but it seems like there's no reason why you couldn't do this.

For instance, if you take a screenshot of the entire screen including the cursor, then hide the cursor and take another shot of the area behind it (while recording its coordinates), you now have enough information to have a "Cursor" option in the save dialog.  You either save the version with the cursor or paste the empty rectangle over top of it and save that.

Likewise, saving the inside of a window with no window borders is just a matter of taking a screenshot of the entire screen, and keeping track of the two coordinates of the rectangle that defines it.  The user can then choose to crop the image to just include the focused window according to the saved coordinates.

Instead of selecting an area of the screen first and taking a screenshot of it, take a shot of the entire screen and allow the user to crop it afterwards, before saving.

Drop shadow and border can be added after the fact, too.

The user can hit PrtScrn quickly and it will capture anything and everything they might want, and let them choose which parts they want to keep.  ;)