Let's face it, at the minute this is Mignolet:
Shot Stopping - excellent, even when having a quite game, if he's called into action, he's brilliant - he's second to none on this note.
Distribution - Getting better but still shockingly average for a player at the back of a "footballing" side.
Command of the area - Poor, too indecisive and inconsistent when coming for crosses. And he's either too slow or too rash off his line.
There's massive room for improvement, but that doesn't make him a write off. Sterling has worked tactically and become a better player, Skrtel has become more disciplined, etc, I don't see why the same sort of logic can't be applied to keepers.