The only thing I would have RV change about the Treo CTs is the terminal strip. I would place it slightly higher on the back of the cabinet so there would be a bit more room for speaker cables and I would redesign the terminals to accept full size spades.
What is it that you don't like about your speakers ?
Most people usually sing praise of what they have, be it Quad, Harbeth, Vandersteen, Magico or whatever.
In another thread I already said what I didn't like about my Michael Green Audio free resonance speakers. I could add that better frequency extension wouldn't hurt, they can't fully reproduce Hellborg's custom acoustic bass guitar or Glen Moore's customized bass. Fewer complaints regarding high frequences but still. And they don't exactly disappear, though this doesn't bother me much - instruments when played live don't disappear either. Imaging could be sharper but again not bad. I expect some coloration from anything that is a box. This includes room - it is a box as well.
In another thread I already said what I didn't like about my Michael Green Audio free resonance speakers. I could add that better frequency extension wouldn't hurt, they can't fully reproduce Hellborg's custom acoustic bass guitar or Glen Moore's customized bass. Fewer complaints regarding high frequences but still. And they don't exactly disappear, though this doesn't bother me much - instruments when played live don't disappear either. Imaging could be sharper but again not bad. I expect some coloration from anything that is a box. This includes room - it is a box as well.