Force Sense is to feel another being's feelings, impending danger and presence of the dark side, so technically Order 66 would never work.
In Episode III,
Palpatine would hide again in the shadows. Padme wouldn't die, while giving birth to Luke and Leia, they would grow up together.
In Episode IV,
Obi-wan wouldn't die,
In Episode V,
Yoda wouldn't have to hide on Dagobah.
In Episode VII,
Kylo Ren wouldn't been born as Han and Leia would never have met, and also Han Solo wouldn't die.
Also Episode 4, 5, 6, 7 wouldn't exist.