If we could just get efficient passing of objects graphs from one subinterpreter to another, which is not in the current plan, I think that would solve a lot of

If we could just get efficient passing of objects graphs from one subinterpreter to another, which is not in the current plan, I think that would solve a lot of use cases. That would allow producer/consumer-style processing with multiple cores without the serialization overhead of the multiprocessing module. Removing the GIL seems like it could make things more complicated in many ways by making lots of currently thread-safe code subtly unsafe, but I might be wrong about this. (...in which case it would just make things very slow because everything is synchronized?)