Yes, sort of, but they've always been added on top of a standard text editing interface so tend to be behind context menus (which is OK as they're also often high-level refactorings that aren't used that often). Treefrog's structure-aware edits are lower-level and more deeply integrated into the editing interface - there's a whole mode dedicated to them where the mouse and keyboard behave differently. The aim is to design an intuitive editing interface; the AST itself is just one tool to help with that.