The fifth lightsaber form, based on what I have read, reminds me very much of Archer's technique from Fate/Staynight - the blade is weilded backhanded, used in an offensively defensive technique that relies on power attacks and counter strikes (and is the form of choice for a Jedi wishing to deflect projectile weapons).
This got me thinking - what if one were to mix that kind of sword skill with a biotic vanguard? Wouldn't that make for one badass character mould?