Well, you had Lisp structure editors already in the 60s. Doing it graphically doesn't really add too much to it. If you read the manual for BBN Lisp, you can see that it did end 60s / early 70s more than many current systems do - like managing source code, working with images, structure editors for code and data, sophisticated user-level error handling, etc..
the interactive REPL was introduced by Lisp around 1962 way before Lisp Machines, Smalltalk...