I believe that there should be a score screen for the end of the game to calculate the total score for when you lose or win (loss and win have different screens).
After the loss sequence, there should be a score screen displaying the final score of XCOM while the background shows a host of various aliens and terror units among the wreckage of humanity.
After the win sequence, there should be a score screen displaying the final score of XCOM while the background shows a great party celebrating the end of the alien threat, showing Scientists, Engineers, and X-COM soldiers in coveralls and personal armor doing many party things.
Also, the new monthly ranking will read Bad! (Only in monthly ranking) Bad is ranked between poor and ok, will be given if your monthly score is in the negative zone, between zero and the negative points for poor performance. The bad description will read:
The council of funding nations is not very satisfied with your performance thus far. They hope that you improve your ability to deal with the alien incursion over the next month.
