Studio 2.0 is cr*p, it's so slow and bugged that it can hardly be considered a serious LDD replacement.
Still way faster and more stable to run LDD in a Linux VM with Wine than Studio 2.0 natively on Windows or Mac!
I really hope the intrinsically better software LDD will be updated to 64 Bit. It wouldn't even demand additional features since it's perfect as it is.
Just needs to support the newer pieces.