Come the BABLR side. We have cookies! In all seriousness this is being done. By me. I would say structural editing is not a dead end, because as you mention p

Come the BABLR side. We have cookies! In all seriousness this is being done. By me. I would say structural editing is not a dead end, because as you mention projects like Unison and Smalltalk show us that storing structures is compatible with having syntax. The real problem is that we need a common way of storing parse tree structures so that we can build a semantic editor that works on the syntax of many programming languages