There're no internal discussions on it yet, but it's something I've thought of tackling a few times. I've written a few advanced introspection features for personal projects that break down at the module boundaries due to babel being only a per-file transformer, and there are definitely other cool things that could be accomplished with a full project level transform.
Just don't expect it in the short time, though. We're already fully loaded just trying to keep up with the syntax transforms.