I completely agree and i do use cpp programmers when i already have defined what i need to into cpp.
Where i think there is a gap is with core features where alot of blueprintes hit a wall and have to dig into cpp and visual basic to get access to basic functions just to get a prototype up and running. Instead of all of them pay each 1 programmer or start learning cpp to get access to these general features we would be better off by getting these exposures added to the default engine.