HI, It is 2014 now, and I have basically the same question April had a couple years ago. I am using 10.2.2, (though the Map Book I am labeling I set up in 10.1 last week before I started working at new workstation with 10.2.2).
I too was hoping I could find a way to move the leader origin a bit away from the point center so it isn't obscuring my point symbols. Is it still impossible to do so? I definitely can not find an option that looks like what I seek. Is it possible to set leaders to display below point feature symbols?
I am just learning to use Maplex, and it isn't exactly easy to master all at once the various layers of options as I seek a solution that will work in my Mapbook. I hope I get much better at this, the Maplex label engine is a pretty amazing timesaver...if i could just figure out a couple more things. I have watched the video I found on ESRI support page, it is GREAT, but doesn't answer all my questions.
I am also trying to understand how to control label angles in my Map Book (I am using a Strip Map Index), and using data driven pages is all new to me. So, I am trying to learn a lot of things all at once, and of course wishing I could finish my final template product and move on to processing other data sets.
Please send tips, tutorials, anything that might help.