What is an at-least-comparable or better replacement? How about the Mavic Classic?
To update/upgrade from a P4 pro, you'd have to look at the Mavic 3.
Whether you chose the original or the classic, is up to you as they are identical excapt that the original has two cameras, the large one with a wideangle lens and the smaller one with a tele lens.
Unless you were shooting nature documentaries for teh BC of similar, the Cine version is overpriced, inconvenient and of no real use for most users.
The Mavic 2
is nearly as old as the P4 pro and its only advantage would be the folding form factor.
The increased flight time you get with the Mavic 3 is a significant upgrade and the smaller body seems to be better able to deal with wind than a Phantom.
The main camera is good, possibly slightly better than the P4 pro, but comparing shots from both cameras, it's not easy to tell.
I thought the tele camera was a toy, but it can be useful.
Although the results from its dinky sensor can't match the main camera, I'm getting some useful shots that would otherwise be impossible.
On the downside, the DJI fly app and controller are a step backwards, but you can still use them to get great results.
Interestingly, the dinky controller has greater range, even without antenna reflectors.
It appears that there is no mount for an iPad on the controller? Is it not possible to use an iPad with this model?
There are lots of 3rd party accessories available for this.