Yes - I think ChakraCore can be a good option.
But most of its performance will be burned at the Chakra-Shim layer unless the JS engine can be picked and fixed at installation time. I feel, it will not attract many developers who are looking for the fastest option if Chakra-Shim needs to translate between V8 API and Chakra API.
But I hope it will inspire to improve Node.js as community (hopefully as a platform too).