As much as I’d like to see consistency to give the UX a more unified feel—and I’ve argued for that here for quite a while—I think you’re right. I recognize my own bias in this, because my oldest camera is a Cam Pan v3, so I don’t have any hands-on experience with Cam v3 or older, though I’ve read compelling reasons about why it’s “better” in some ways (and I recognize how subjective that view is).
From my perspective, and when I write about it in the Forum, I generally put quotes around “old” and “new” when referring to the “‘old’ UI” (which I think of as roughly Cam v3 style and earlier) and “‘new’ UI” (which I think of as roughly Cam Pan v3 style and later, and I include Cam OG in that even though its UI has some additional differences and quirks). That’s probably not the most accurate way to describe them, but it seems like a useful way to broadly categorize my awareness. Someone with a larger collection of cameras—say, 50+—across the full range of the product spectrum could certainly provide more specific detail.
I don’t think any solution is going to be ideal or please everyone, especially not going back and “fixing” the “old” UI that so many users seem to prefer (even if I’m habituated to and generally like the “new” UI), but enhancing consistency across “new” UI cameras seems like it would improve the UX and perhaps even unify some of the coding to make app and backend maintenance easier and more efficient.
Anything that makes the app feel less fragmented and compartmentalized (like universal Dark Theme and true landscape mode) would be an improvement going forward, I think.