Only the parenthesis in Lisp have to be like that to serve a purpose (data is code is AST, homoiconicity, macros, et al). They cannot really be changed much and

Only the parenthesis in Lisp have to be like that to serve a purpose (data is code is AST, homoiconicity, macros, et al). They cannot really be changed much and still have a Lisp proper. Whereas Smalltalk IDE window handling could be improved tremendously from the mid-90's designs it still carries to this day. Not the reflective/debugging/refactoring capabilities (the good parts). Just the GUI and the handling.