One pet peeve of mine that this kind of editor might be able to address is how live compilation is sketchy when you're actively editing a file. For example when

One pet peeve of mine that this kind of editor might be able to address is how live compilation is sketchy when you're actively editing a file. For example when you're in the middle of an edit and you end up with a huge number of compilation errors because the parse of the file is in flux. Having the editor and the syntax parser aware of each other can help fix such issues. Semantic merging would also be a nice feature.