I like this suggestion a lot: most people buy a bike and then a fitter has to work around a frame that perhaps does not fit properly or sports a geometry that isn’t ideal for the rider.
Under normal circumstances, I’d recommend people to aim for something more relaxed — too many people want to ride something racy, disregarding reality. Fortunately, there are many bikes on offer that square the circle in different ways. You have racier endurance bikes like the BMC Roadmachine or more relaxed race bikes (Trek bikes with H2 geometries). The other thing to consider is whether you want to optimize for speed. There are interesting options like the Open UP, the 3T Exploro or similar, which are road bikes that allow you to fit everything, from 25 mm to proper mountain bike tires.