Grant was an excellent host: dark, mysterious, edgy. The new host is basically Aussie-Hollywood imperfection. He's the kind of bloke you'd have beers with after the footy, not the kind of guy who makes you fear and anticipate every move from the mole.
The eliminations are a joke. They are dragging out the two challenges over a week (the old series were very fast), meaning the mole only have to be 'the mole' 2/7 days. But moreso on the topic of live eliminations, they are terrible. The host jokes around, there is no pressure. It's crap. in fact, the elimination takes up 10 mins of the 45 or so mins of footage on the show. That's almost a quarter!
However...admittedly, the concept of the mole is a lot of fun (even though deep down you know that the camera will definatelly aim to fool the viewers in leading them down the wrong track).
Take away the new host, the new 'live eliminations', and you get a great show.