It's not true that Riise is flavour of the month whipping boy, plenty of fans who have been saying the same thing for years about him. He hasn't just lost something, it's something he's never had, he's never been technically good enough and it has a significantly negative effect on our style of play.
At the same time, nobody is saying Aurelio is the best left-back in the league, but when you watch him play, you actually see somebody is at ease in possession, can knock the ball around and is also positive when he hasn't got the ball which most of our players are not (to be fair to Riise he's one of our better ones when he plays in midfield but not at full-back). The problem with him is his injuries and whether he can fully adapt to the Premiership.
For us to step it up in the league, we need to have true footballers on the pitch, the only player I think we can afford to have who isn't great on the ball is Carragher. The full-backs need to be able to keep the ball calmly at the back and in our build-up play, and get in behind the opposition full-backs and create chances off the ball.