I’m already doing ripple editing in Nuendo with the command “Delete Time”
with the range tool, I can select on one or more tracks, hit delete time (I have a key command set up as Shift-delete) and everything ripples in (only on those tracks and range you selected)
with the object select tool instead (ie the arrow or first tool), you have to make a selection in the ruler, then delete time, and the whole session including all markers, tempo events and so on all ripple.
Is that what you are all looking for?