You have 6 numbers there....if you have 6 numbers that are "untouchable" there is no such thing as a total overhaul. If there are 6 guys that are the crux of your team they just need to be supplemented properly...
Here's the thing... I think at some point we have to ask if that 6 is a winning group...if there is going to be a "total overhaul", I think you have to look at the 6 you think are untouchable.
But I look at it much differently. I think you have to separate the defense from the forwards...I don't think the defense is as advanced as the forwards. And I don't want to throw away any of them...I much rather get some forwards with strong defensive qualities to help out with a young defense. Get a real veteran Dman to help out with the youngsters....not a 300 game veteran
The forwards need a little bit more of soul searching in my opinion... I'm not sure your untouchable group has all the qualities needed to win without adding significant players... I think that group as a whole is small and soft and needs to be balanced with bigger, tougher skilled players.
Choices are difficult. But as is, I don't think this team can really compete for the ultimate prize.