Out of the two twins Darren is my favourite, and I think the father/son relationship with him and Keith is very well portrayed. Demi's come across as a bit of a spare part ever since Leo died. So in terms of the seperate characters I'm not that bothered about Demi, and am glad Darren is staying. However Rosie is brilliant and played by a fantastic actress.
The Millers are a solid family unit, including Demi (splitting the twins up will be a mistake I think) and that's the bit I love about that. Not to mention they are the only family on the Square that is an actual mum+dad+kids family, which I like. I think this is a huge mistake.
And what's with all the single guys anyway? If we add Keith to the mix we'll have, I think, 12 (assuming none of them get girlfriends or leave between now and then.)
I also agree it sounds strange that if Rosie left she would only take one kid with her. I hope they don't kill them off.
Not at all happy about this.