RE: FP Changes
Always been talk on this point and frankly - I'm a 'watch and see' guy on this one. Talk is cheap. Action is what costs money.
RE: MK Expansion - Is There Enough Room?
In a word - yes. In two words - yes, absolutely.
There is ample room to expand MK in Florida with some creative thinking and approaches to how to do it..
The map below shows a number of colored areas that could easily be used with bridges or walking paths over the Railroad tracks in some cases ... some internal backstage areas might have to be relocated or better 'hidden' with fake facades or artful landscaping but there is a huge amount of land that is useable when you look closely..
The 'yellow' highlighted areas behind Cindy's castle would be trickiest because some fireworks are shot from that area for Wishes and other nighttime spectaculars at MK and there needs to be a safety 'cushion' so that shell fallout and so forth doesn't land on guests pending wind direction and so on.
I didn't highlight it - but the Magic Kingdom lake area below Space Mountain and behind Carousel of Progress could be used for 'pier like' area and possibly even hosting a new evening show involving water, fireworks and whatever.. kinda like Fantasmic..
All that said - there is enough room for expansion for at least two or three entire 'lands' if they think creatively.. I suspect they are talking about something much less ambitious however in which case space is the least of their concerns.