Normally, hitting the spacebar repeats your last command, however, if your last action was a right-click command, such as adding a vertex or leader to a balloon or leader text, the spacebar repeats the PLACEMENT of a NEW leader or balloon instead of allowing you to add additional leaders/vertices to existing leaders. Often times, I will have one leader/balloon pointing at several objects, so I will use this action multiple times in a row.
This change would save several RMB clicks and browsing through the RMB menu.
