Despite all the big deal that was made about a saberstaff being too offensive a weapon in the Star Wars universe, it's actually much more effectively used as a defensive weapon, as blocking/parrying/deflecting a single saber with it can allow the other blade to be brought around. There are a number of ways to "push" your opponents blade away with a saberstaff that keeps it from being able to block the other blade as its brought around. In those cases you either dodge or get hit.
I think, from my experience, that when using a saberstaff positioning, and thus footwork are even more important than fighting with just a single saber.
(And I'm not even going to bring Jar'Kai (dual wielding) into this discussion, because that's another whole set of issues.)
I was just thinking the same, that a competent saberstaff user would make a nigh-unbeatable Soresu practicioner, given a few areas to modify to account for the extra blade.
