I think a lot of people are sceptical against combination of small tools since you tend to end up having to learn how to combine them, which may or may not be e

I think a lot of people are sceptical against combination of small tools since you tend to end up having to learn how to combine them, which may or may not be easy. There is nothing stopping Google from developing an IDE that internally uses a lot of small tools (refactoring parser etc) and also makes the same tools availible as separate things from the command line. I still think the visual feedback from a good IDE is worthwile and the user interface is usually much easier to work with.