That was what we were asking for in June 2020, already.
I think there were some threads with similar discussions, but can’t find the important one now.
We suggested using the Channel to All Mix button to do copy and reset the routing for a channel or a group. The mix buttons doing already what is needed from a mix side of view.
In this case, you can still copy/paste the routing and the processing as needed without answering a dialog box or doing a preference change.
Another discussion about that? I believe there are more…