A wannabe speaker designer.@william53b - Hardly "wannabe". Danny has designed some of the best speakers available - winning best sound at show at a number of audiophile shows. He offers designs, drivers and crossover components at a bargain price to those interested in building their own speakers, and, for a price, is willing to do crossover and other design optimization of any speaker you can provide.
I was going to respond to your thread saying that if you really want to improve on the base Magnepan model, just do it yourself with or without the help of someone like Danny Ritchie from GR Research. There are also a number of artisans that can help with the actual modifications if you don't feel comfortable doing it yourself.