"and delivery will all suffer if you don't have the right fundamental design skills" Some people will never get them. And maybe do not have to, if they are not

"and delivery will all suffer if you don't have the right fundamental design skills" Some people will never get them. And maybe do not have to, if they are not involved in the complex design process(too much), but rather the implementation and testing of well defined small modules. So I believe it is very important to let people do, what their talents are.