There seems to be some misunderstanding going on.
I can’t remember us planning to “rebuild the world”. Compatibility with Java libraries was among our highest priorities from day one. Which blog post made this impression?
Nor has the standard library ever disappeared: it’s still there (https://github.com/JetBrains/kotlin/tree/master/libraries/stdlib, http://jetbrains.github.io/kotlin/versions/snapshot/apidocs/index.html), currently it mostly provides convenience methods for collections and such, but we will probably add some important data structures that are missing from the JDK, such as MultiMap etc. so the goal of the standard library is not to replace anything from Java, but to add what’s missing.
Thanks for the report on the broken link to the issue tracker, I’ve fixed it in the ReadMe, and here’s the correct link: https://youtrack.jetbrains.com/issues/KT?q=Subtask+of%3A+KT-2554+%23Unresolved