Christine wants to rejoin the band according to The Guardian

[SteveMacD]

Originally Posted by mylittledemon

Look at Say You Will... if you base it purely on sales, it came nowhere near what The Dance did. I think that's for obvious reasons - take Chris out of the equation and the core of the band becomes skewed.

Well, that and the fact "The Dance" was basically a Greatest Hits Live event first broadcast on cable and radio. I don't know how much better an album of all new material would have done even if Christine had been on board.