Indeed the curved line array system I heard at Axpona was a DIY speaker...and sounded rather pedestrian. As did some mega $$ systems. But there were a few mega $$ systems that sounded really really good. In between was something like the Linkwitz dipoles, which were both DIY and not astronomically priced. Sounded fantastic to me, just don't have the space for speakers like that. Not too sure if Frantz's approach would actually work, who knows.
I would note Rays "main" system are Krells driving big Martin Logan stats, the type of system MKR raved about at Axpona show. Just sayin'

. There may be more to spectacular sound than an in room 20-20k pressure point measurement.
Btw, just got latest subscriber Stereophile (not yet available public online, so won't post data pics), where the TAD CE1TX ($35k

) was reviewed. The measurements look really good. Ironically, like the D&Ds, one of the "Best of show" speakers
https://www.soundstagehifi.com/inde...best-of-florida-international-audio-expo-2023
Could that be done for $2500? Dunno. I think you need to drag a system to one of these shows Frantz, wherever you are