Transient throttle response is generally down to your throttle based enrichments, it of course needs a satisfactory base map for fuel, which is dead easy to achieve.

Part throttle tuning is yes, overlooked most of the time...

Forgive me if I have misunderstood you Chernobyl1, but why would an engine tuner tune an engine with an electronic throttle, "precise" boost control, etc and then refit the car with manual gear? The car to be tuned is the way it should come into the shop and leave the same way unless something needs modifying... to go changing things for the sake of tuning is just ridiculous.