When I say change the format, I'm referring to the format only, not the story or setting or anything. I think they might be looking at taking a more American approach in terms of episode numbers, length, and possibly the way they approach the writing. I'm not saying they'd be writing for sweeps, but they might want to write a slightly more coherent and compelling story arc, which might be easier if they had more episodes to play with, but that requires quite a commitment from the actors and production team