This is a real change that I think will be permanent because of COVID's shock to the system, even when it subsides. Until recently a big R1 dept like this just flew out 3-4 people and there were no preliminaries, even though the technology existed to do them. The Zoom interview or the Skype one or phone one was a teaching school thing. Hard to say if it's an Improvement, but different.
UCSD is doing Zoom preliminaries and will only fly out the finalist.
If that person blows it at the flyout they will go to the next on this list.
This is for the comparative politics position
Hard to see why it wouldn't be an improvement (in terms of market efficiency in general). Just an opportunity for the search committee / department as a whole to get more info on the candidates before making the investment of a fly out.