User blog comment:Stbk22/Possible Power up's/Techniques for then new group DxD/@comment-3965848-20140208111421

I think there might be a chance that Saji will become part dragon due from absorbing Issei's dragon blood, and with all 4 of his Sacred Gears permanently combine to form a new Sacred Gear were he achives his Balance Breaker.

Although thats just my theory.