Ban all imports, and limit the number of dogs each training license is able to train. Extend dogs racing life by not being able to start racing dogs until two years of age. Then program races for dogs until 7 years of age in age related races. Example, races for 7 year olds, races for 6 year olds, races for 5 year olds. Not saying this would suit every dog, but most would be ok. By starting racing career at two, and finishing at seven, this will give them a five year racing career. Life after racing would be shorter thereby making it easier to keep them in old age. If this concept was adopted, the industry would solve the wastage. At present, dogs start racing far to young, and are burnt out far to early. If I was in charge, I would limit racing per dog to once a week. If they are serious about welfare, then radical changes are needed, and redesigning the grading of Greyhounds to incorporate older dogs is needed.
If a Greyhounds racing life can be extended, then this will go a long way to solving healthy dogs being put down. Maybe a 5% deduction from stake money to be pooled for subsidy to trainers or owners to look after dogs in retirement once they reach 8 years old.