Nothing related to the crankshaft was changed in the 2017 models, allegedly. They did make some adjustments to the cooling system, which has been one of the few complaints.
They're giving away 2017 models right now. Once those are all sold, then a used ED with a GDE tune added is really not a bad option at all.
Life can only be understood backwards; but it must be lived forwards.
- Soren Kierkegaard