Oh my Ken, I don't think I would touch that tweeter...ever.
I would say I agree on the cabinet and a lot has changed cabinet technology wise since they first came out, so there is room for improvement there.
I would like to see even greater adjustability for even better room integration, but what they have now is still darn good and a whole lot better than most.
I would beg for greater efficiency, but that won't help sell 1000 watt Mark Levinson amps! LOL.
They could get funky and try some rear firing super tweeter or something, but man, the way they sit now is darn good.
In my room, the biggest issues were not enough bass (can you believe that?) and a recessed midrange. Other than that, I could play them loud and they never broke up and that tweeter sets the benchmark.
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