I do a lot of audios with multiple markers and have to move audios several times, adding some more or cutting others.
In this matter, I have to move several markers at once and it is currently impossible. What works though is inserting a silence to move all the next markers at once, but that's not convenient at all because it has to break some tracks.
So having a simple feature that, after having selected several markers in the "marker panel", allow us to move these markers with a duration would be a huge time saving !