I recall the venom around Nintendo ever going in Kidzone a few years back at Orlando United from their insiders.
@Lee thought Frozen in TDS was a terrible idea about a year ago. Things that were largely true at the time do change.
As of today though, I don't see any sort of ride connector occurring at WDW. It does not mean it isn't a possibility to ever happen, but there is no indication it is happening now. Nor would there be a logical reason when DHS and Epcot have transport options and AK largely languishes with buses.
Disneyland could have built a monorail stop in DCA and chose not to, Tokyo actively discourages park-hopping by disallowing it on the first two days of tickets, Euro Disney continues to have very little money. Maybe Hong Kong...