Re: Rogue or Kitty?
Neither Rogue nor Kitty have past versions in the 1960s, so they are not as obvious a choice for time traveller as in the comics.
But Kitty is more 'comic accurate' as a choice for time traveller and perhaps her phasing powers allow her body to survive the physical trauma of the trip.
Singer has a better relationship with Anna Paquin and has never worked with Ellen Page before. But Rogue would be pretty useless either in the future, or if sent back in the 60s, unless her confidence, battle training and powers are beefed up a bit.
I don't mind which one, but if it's Rogue she has be a bit more feisty than in the previous portrayal.