Javik really feels like content that was ripped out of the base game for money, because he was. Nowadays it's basically impossible to not get From Ashes included with ME3, but at the time this really soured the game's launch. Javik himself is a very unique character and feels far better integrated into the crew than either Kasumi or Zaeed in ME2, but being ripped from the base game also leaves some of his moments feeling disconnected from the events of the game. Business decisions really hurt the potential of this one.