I agree that Jakku should have been Tatooine, and I would love this change, if it could be done. Realisticy though, the only thing you could do would be add “Tatooine” text at the bottom of the screen. It’s impossible, because, like NeverarGreat said, you would have to cut every time someone mentions Jakku: In TFA: Rey, Kylo, Hux, Poe, Finn, Han, In TLJ: Rey and Luke. It wouldn’t work if no one actually says “Tatooine”.

Well I appreciate you listing out the names of the characters who say “Jakku”. Kylo Ren says it with his mask on, IIRC, so it would be trivial to dub. The others would take more work, though. Do we have any instances of them saying “Tatooine” in the EU?