Since you are looking at alternatives to upgrade your Trios, at some point you might want to experiment with different capacitors in your crossover. I know a custom builder who makes some quite expensive and nice sounding speakers and amplifiers and he tunes the sound to his and his customer's liking with choice of capacitors in the crossover. He particularly likes vintage paper in oil caps from the likes of Western Electric and Aerovox, but, he also uses modern film caps from Audio Note. I've heard the difference and it is quite substantial. What he really hates is the sound of Mundorf caps--he finds them to be dry, analytical and unpleasant. He can hear them when they are employed in amplifiers too and does not like the sound. He also employs different internal wiring for tuning the sound.
The thing that is missing in most speakers these days that is so critical to getting a speaker tuned--to the taste of the owner, to the room acoustics, and to the other gear in the system--is an L-Pad for adjusting the level of the drivers. It is crazy, to me, that designers think they have got it just right for every circumstance. I think adding an L-Pad would be another step in upgrading the speaker. The Trio I heard sounded really good, but, I bet it could have been made more to my taste with such control of driver levels. My speaker came with level controls for the midrange and tweeter, but, because the midrange control only allowed for three setting, I put in an L-Pad instead and it is really useful for tweaking the sound.