Well, not every car is a project. I think most guys swap turbos, injectors, and install a 3 bar MAP. You can make a cal the gets to 90% of that setups capability without ever retuning the cal.
If you go to a big can, ported head and a BMF intake, you're going to need logging for sure.
Maybe the first question a tuner should ask is how modified is the engine. I think that has the biggest impact on how you start.