I could be very off when saying this, but I think having Christina on GDNY was a test.
By the way that the fill ins have been looking, Kerry Drew has been doing a lot more nights, where she was typically in the mornings.
Considering Juliet Huddy is not yet "official" - when I say that, 1) Her bio is not on the WNYW site 2) She hasnt been confirmed by any outlets to be the permanent anchor.... I could see them wanting to move Christina Park to the GDEC/GDWU - which she was on before, so it wouldn't be a huge stretch! And then moving Kerry Drew to anchor weekends and report during the week.
This is probably wishful thinking because I love Christina, but before Steve Lacy was moved to nights, they did experiment with him filling in a few times!, But I could see it happening, I dont think its a huge stretch.