If Anakin Skywalker had not been burned on Mustafar, it would have had a significant impact on the Star Wars storyline. Here are some possible outcomes based on the search results:

• Palpatines reaction: If Anakin had still lost to Obi-Wan but didnt get burned, Palpatine would have probably just replaced Anakins sliced off arms and legs with robot parts. He would have then still used him as the enforcer of the Empire.

• Vaders appearance: If Anakin had not been burned, he would not have worn the iconic suit that Darth Vader is known for. Instead, he would have just worn a cloak.

• Vaders power: Anakins burn injuries diminished his force potential to just 80 percent of the Emperors power, as mentioned in the Revenge of the Sith novel. If he had not been burned, he would have been more powerful.

• Lukes reaction: If Luke had known that Anakin had been burned so badly, he might have burned his corpse after he died, which would have brought back some bad memories for Anakin.

• Anakins destiny: Some speculate that Anakin was meant to be mutilated at Mustafar in order to give Palpatine power over him. If he had not been burned, he might not have turned into Vader and could have fulfilled his destiny as the Chosen One.

Overall, if Anakin had not been burned, it would have changed the course of the Star Wars story significantly. Palpatines reaction, Vaders appearance, power, and destiny, as well as Lukes reaction, would have all been different.