Do you have any details on what could be improved wrt V8's snapshotting? We have recently extended the feature set a lot in order to be able to snapshot full Blink contexts, and there are some efforts on-going to implement that in Node.js as well. Soon crutches like electron-link won't be necessary anymore.
Some context:
https://v8project.blogspot.com/2017/05/energizing-atom-with-...