Q1: I don't see why MEP creates 4 entries in Last templates when I save a project?
High res: https://dl.dropboxusercontent.com/u/4019461/MEP-DVD-Menus-LastTemplate-1.jpg
After some editing of the HD Static > General > Default ... 16:9 template, I'd already used Save in last template, (which created the fifth entry from the left) so I didn't even need one extra entry, much less four. But I can understand a single one being generated, for security.
Q2: How long do these entries remain? I should have hundreds by now, not a mere eight!
Q3: I changed the text of a menu's buttons from left align to centre, applied to all, then used Save in last template. But d-clicking that new entry returned the text to left align. Expected behaviour?