revel’s 226be is a nice sounding slender speaker if you ever wanted more room but I think they lack dynamics/snap next to a good horn. I would keep the horn and rock the phantom center.
I watch a lot of vintage BDs from the 50s through the 70s. While there are some very impressive exceptions- https://www.blu-ray.com/movies/PJ-Blu-ray/258849/
https://www.blu-ray.com/movies/North-by-Northwest-Blu-ray/139345/ -the audio of most of my titles were often hit with a lot of dynamic range compression for various reasons.
https://www.blu-ray.com/movies/The-Big-Heat-Blu-ray/170647/
While the compression may not necessarily make the movies sound as bad as if the audio had clipping (overload) distortion https://www.blu-ray.com/movies/Inferno-3D-Blu-ray/174325/ , hum or other audible noise, if you were often to play such content, might the lack of dynamics and flatness of the sound become very fatiguing, even with well-designed horn speakers?
https://www.blu-ray.com/movies/The-Laughing-Policeman-Blu-ray/155116/
https://www.blu-ray.com/movies/The-Parallax-View-Blu-ray/42659/
And since the dynamic range of a recording cannot be restored once it has been compressed-even with software like this https://www.izotope.com/en/products/rx.html?srsltid=AfmBOoprArvJASWIn_nRl5VfwNTUTkD4b1iscv0adPnsn6rzV9aHxAcG -might we then be more inclined to instead choose direct radiator cone speakers for movie soundtracks with such audio quality problems? Perhaps even some of the better turnkey speaker systems?
https://www.crutchfield.com/g_12000/Floor-standing-Speakers.html?fa=1#&price=3070-7130