...And once again: Reaper For the win.
If anybody else wants to do this:
1- Make sure Smooth Seek is Enabled
Here's the very simple macro:
Move Edit Cursor forward one beat (no seek)
Move Edit Cursor Back one beat
DONE
So now, you move your edit cursor with all the "No seek" actions and when you're ready,
You hit this last macro.
#HappyDance