I think you mean some more engineers with world-class expertise in network storage: the fact that EBS/S3 have worked as well as they have at scale should indicate they have some already.
Sure, they have failures/slowdowns etc, but they are pioneering the space of providing massive infrastructure to heterogeneous clients at low cost, and still manage to keep it working enough that companies entrust their business to them.
Sure, they have failures/slowdowns etc, but they are pioneering the space of providing massive infrastructure to heterogeneous clients at low cost, and still manage to keep it working enough that companies entrust their business to them.