That was not Yoda's plan at all. You are way off there.re: changing Luke's name, during his exile on Tatooine
Yoda's Plan was for Luke to trigger a turn in Anakin, so Anakin could fulfill the prophecy and defeat palpatine. after all, Yoda HIMSELF faced off against the emperor, and Yoda HIMSELF could not defeat palpatine... Yoda knew (first hand) that the emperor was too strong for Luke. Luke wasn't even a "fully trained jedi knight" (yoda's words), he was just a padawan -- and I think we can all agree, sending a padawan to defeat the emperor, would be sheer insanity on Yoda's part -- Yoda's not that stupid. the whole plan was hinged upon Anakin turning against palpatine in ROTJ -- Luke was "bait" --- thats why they didn't change Luke's name.
Yoda hoped that Luke, by virtue of being the offspring of The Chosen One, would have the power to defeat Vader and find a way to kill the Emperor.
Neither he nor Kenobi believed there was anything of good Anakin left. It was only Luke that believed that and Kenobi even told that kind of thinking would get him killed. It was why he revealed the truth about Leia. To push Luke to be willing to kill.
To say Yoda was manipulating the situation to turn Anakin back to Lightseriously dilutes both Luke's compassion for his father and and Anakin's decision to save his son.