Can this (or any) Rust IDE jump to definitions, do project-wide code refactoring, or highlight incorrect parameter types? These are the three big things I really want in an IDE, and without them I'll probably stick to Vim (as I'm more productive there); the features I mentioned are kind of a tipping point between editor/IDE use for me.
(It doesn't look like any of these are supported based on the advertised features, but maybe I didn't read closely enough.)