They're not exactly knitting cardigans for the grand kids though. They'll probably get more to do when the baby comes, but having said that, you would think that the death of Tony's first born might rate some screen time.
I actually liked seeing Rachel wearing normal house clothes. It was kind of refreshing. I would like for them to be the couple who act like normal people and don't make a huge drama out of every little thing. Rachel used to be like that when she was with Kim - between resisting him and despising him - and it's just possible that if she spends enough time with Tony, he'll mellow her out again.
As for ratings, Amy won a "most popular" Logie not too long ago, and Tony's got his own groupies, so if ratings is what people are worried about, they'd be downright nutty to ignore the magnetism of both characters.
For now, I'm blaming the Austin's. Too much too soon. They might have been better off focusing on Tony and his sister to establish the family as being truly relevant to the Holden clan, then they can go off demanding their own scenes and sympathy. I've never liked having so much focus on new characters, but at least we've seen Xavier before the funeral. They get points for effort there. I just don't want blonde teen Xavier and mid-20s brunette Hugo to replace Tony's sons, because I don't intend to forget Lucas and Jack as easily as all that, and I don't expect Tony to either.