Outside of a potential CR DVC, don't expect any new monorail service to any other DVC resort, existing or new.
I saw something published a number of years ago that said for Disney to put in more monorails it would cost $1-million per mile. Don't know what all was in that figure but assume it includes trains and stations as well as the track itself.
Don't know if that's accurate, but if it is that might explain why there's no plans for any more monorails.
I don't recall where I actually saw this figure, but it was published somewhere (possibly a newspaper report) and if I recall it was about why there were no plans to run a monorail to AK when that park was being built. Something like that. I'm pushing my recollection on this one, but I definitely remember the $1-million figure.