You don't have to utilize the same concepts and plotlines in order to present interesting character relationships and to 'embrace the history'. TFA was not embracing history, it was a complete replica. How exactly did the movie go forward? It is the same absolutely evil emporer/conflicted apprentice(Vader/ Kylo Ren)/all decent(parentless) hero/exiled jedi master story all over again. Could they not come up with anything else? I can understand people being entertained by the movie, I can't take that away but it IS a rehash of the original trilogy.