Couldn't have put it better Peter(or as politley)These schemes are always designed primarily to benifit the originator.If their parts and equipment are so good you will buy them anyway.Fairly priced quality always wins in the long run.
How about some of us offer the suppliers we favor the oppertunity to hang their sign over our door,supply overalls in exchange for advertising their product.This would obviously be on an invitation only basis.This would make their other wise unknown names visible where the public come for car repairs.We could also offer them hints on customer service and real world fault finding,the actual locations of diagnostic sockets and what some obscure fault descriptions really mean.Perhaps they could loan us diagnostic equipment so we could diagnose faults with parts they make...oops