Instead of this, I think there would be much more interest in a HomePod soundbar with built in Apple TV and camera for FaceTime, and that could pair with HomePod Minis for full surround sound / Atmos. Ideally 2, one in a larger form factor like the Sonos Arc and a smaller one to compete with the Sonos Beam.
I'm heavily invested in the Sonos ecosystem because (until the infamous software update) all my speakers including TV audio work really well together. I wouldn't buy a HomePod with screen like the one shown in the picture for a number of reasons, including that it wouldn't work with the rest of my audio set up. I won't change to HomePods for my audio set up, in part, because they don't do a soundbar.
Give me a good quality soundbar with Apple TV built in means one device instead of two. A camera would mean I start using my TV for FaceTime with family (I know there are workarounds but do many people use them). Ability to connect HomePod minis as surrounds would mean I get surround sound to rival my Sonos Arc and Sonos Ones combo. All that would be missing is the HomePod sub and then I'd feel comfortable replacing my Sonos set up.