How are your speakers laid out currently? That may or may not affect your decision. From what I’ve seen, lots of music guys really like Auromatic and it’s treatment of music. Movies have been a mixed bag and more polarizing.
IMO, no. It’s not worth it. I really like Atmos movies, and especially Atmos music. While it’s true that some Atmos tracks aren’t that great, but that’s been true from as long as there has been movies. Whoopty do… My system also has tops in the ceiling, so I can’t experiment, but if you currently have heights in actual heights locations you could experiment. I might recommend that if there was more native Auro content. But I personally wouldn’t sacrifice a good Atmos layout to use an upmixer on Atmos tracks. Especially since all the metadata would be ignored.
Seems bass-ackwards. That’s just my opinion.