It would be great to add the Ripple edit. Here, a video of the principe: https://www.youtube.com/watch?v=OcIu31H-xAc
This could be add to the options of the tool “Object Selection” with two preferences: All Tracks (included the marker tracks) or Selected Tracks.
This option is really relevant for a lot of work situations, a lot of software such as Reaper, Pyramix, Sadie, Samplitude, Sequoia have implemented it for a long time. Here the topic concerning the request in V8: https://www.steinberg.net/forums/viewtopic.php?f=276&t=148769&p=820863&hilit=ripple#p820863