Agreed! I think part of the problem is that they rely too much on SourceKit, which is a rather indirect and slow way to provide basic features like syntax high

Agreed! I think part of the problem is that they rely too much on SourceKit, which is a rather indirect and slow way to provide basic features like syntax highlighting and auto completion. These should be built into Xcode itself. As it is now, SourceKit has to do substantial work in a short amount of time which results in frequent crashes. The compeller's error messages could use some improvement too, I don't consider 'BAD_EXEC' to be a descriptive error at all.