@mm1tt77, I have the same experience as you regarding recorded matter vs streaming: Blu-ray excels, end of story. Back a few years, if a movie warranted a place in my collection, I bought it and enjoyed superior sound. My DVD collection is doing a great job as a dust collector now, as I am drawn to streaming. Very little of it has truly good sound that takes advantage of Atmos, likely the result of our ills. I remember watching a series recently where the activity was on the street, and the production did a terrific job of filling the background (rear speakers) with the ambient street sounds you hear but may not pay particular attention to. That quality is rare, but when it's there, it's home theatre bliss.
The stand idea for the center channel is interesting, but is a no-go for me in my space (notice the recurring theme). After a review last night, I feel my center channel is working just fine, actually quite well. I'm sure the next level in the Focal line, the Sopra, could provide an even better experience, but it comes at a significant and this point, unrealistic cost. Many of the ideas here are excellent and warrant trial, with the understanding that dialog particularly, and sound in general, can be somewhat compromised.
The ATV-X streamer I have is not the typical Apple TV streamer (link is earlier in the thread). As one can spend tens of thousands on music streamers or DACs, I was surprised the best "TV" streamers were under $200. Surely someone, somewhere has made an uber streamer that performs as you could only wish for, at (of course) a breathtakingly high price? Enter the Apple TV-X. It helps, believe me, but there are limits. For my edification, if you know of any other uber streamers, I am eager to be aware of video streamers that can scale the heights.