Unless the driver has been meticulously custom-designed and custom-manufactured to have a natural, precise, controlled rolloff at the upper end of its operating range (which is theoretically doable, but is often a very expensive proposition)
Isn't this exactly what Axiom does?
The crossover image doesn't bother me in the least. It's 2 resitors and 2 capacitors. If that is what the design is then fine. Why would it be any better if it was on fancier looking board or if the caps were a prettier color?