well, yoda says to luke to pass on wat he's learned. if i wanted to go EU, luke found some jedi who were in hiding and he changed the code. u can have attatchments, be at any age u choose to be a jedi, and its freedom of choice. no baby snatching.

however, i see why they take the children when they're young. the first part of their training is to become detatched from others. anakin missed his mother and look wat happend to him. he slaughtered tuskens.

now, back to the topic at hand, ROTS could've been easily titled Return of the sith but revenge is an appriopiate title because there is only power involved.

return of the jedi is refering to the luke becoming a jedi and the beginning of a new order starting with him.