I hit the alternate endings pretty hard in the review although for our group it really speeds up the game. When you are playing with a group of 7 or more speeding up the game is good.
The two alternate endings not included in the game but downloadable are The Crown of Command (the regular ending) and the Danse-Macabre. I include the links to both PDFs along with the back of the card if you want to print them out. If they had included these cards with the expansion the review would have earned that 4th star.
One note the Danse Macabre variation requires the Reaper Expansion (reviewed here)