It seems to me that it would make more sense to apply some extra plastic to the front of the dash adapter between the sled's lips and where the lips currently touch (it'd end up looking like a picture frame) and have the sled sit further out.

The reason that I (intellectually) don't like the concept of moving the plug is that the empeg will no longer slide into the sled all the way and the clips activated by the arm won't have anything to grab onto.