@perkadin
if you don't like doing mods, fine. But don't consider a single minute that a Klipsch Cornwall uses state of the art components and that they didn't cheap out on parts. If they didn't, the Cornwall would be unaffordable to most of us.
Swapping crossover components for better DOES make a difference, sometimes huge; the question being "is it always suitable?" as it CAN happen that the voicing actually gets WORSE with upmarket components.
As for damping the horns, well, a horn should be inert, if it isn't (and thin plastic isn't) it can be improved with damping material. Here again, bean counters had the last word. It's free world, do it or don't, but don't call it snake oil as it's very real.