Skilled glider repair shops do composite repair for over 40 years now, and they really do repair everything, up to a wing completely broken at the root. Doing your first loop in such an aircraft after finishing the repair is a little scary though...
In 10 years time it will be as comon to repair a plastic phantastic as it is to repair a tin can today. But I do not want to be the first operator to dent the Dreamliner...