Re: Soooo... SAP cannot automate a SAP -> SAP migration?
mmmm... so HANA does not handle well tables of a type that 60% of customers have. That HANA is designed that way speaks volumes about how much SAP disregards its customers's needs.
On the rest of the points, I agree, no migration of such data volumes and complexity is ever going to be easy. What is unusual here is how your own product handicaps the migration by its very own features. It is usually a sign that migration is not a good idea in the first place.