Older editors rely more on the axial views. Trenchbroom has much better tools for modeling right in the main 3D window. I think what happened here is that over

Older editors rely more on the axial views. Trenchbroom has much better tools for modeling right in the main 3D window. I think what happened here is that over time, people figured out better ways to handle the UI for modeling right in a 3D view, and it became so good that we ditched the axial views most of the time. Trenchboom got rid of the axial views because users didn’t want the axial views any more—and it got more UI improvements for working directly in the camera view. Simpler doesn’t always mean less powerful.