How customizable are guitars, really?
For context: I'm a total newbie on the subject and I'm in the process of buying my first guitar. There are some guitars that have good woods and beautiful designs, but they don't always deliver the best sound.
I'll probably buy a more “ready to play" guitar this time, but in the future I'm feeling a bit tempted to buy one of the other beautiful ones (and with good woods) that I didn't like the sound so much and make a project (with a luthier) to improve them. Is this a good/realistic idea? What is the limit to customize a guitar? Is there anything that is unalterable in guitars?