The original Master Plan called for a Persian resort on the land north of the Contemporary and to the east of the Magic Kingdom. It was supposed to have been a 1001 Arabian Nights backdrop for Fantasyland. I dont think it every made it much beyond the concept design phase, but in the during the construction of EPCOT Center, I stayed in the Contemporary Towers. In the room was an old wall map of the property which included the Persian (and a single monorail line from that hotel to the Magic Kingdom).
During the eight months that the Disney Decade lasted, that area was designated for the Kingdom Suites Hotel. This, as its name suggests, was to be an all suites hotel catering to people who thought the Grand Floridian was on the cheap side. There was some work done on this resort, but the idea evolved into the Vacation Club (although a clone of the resort was part of the WESTCOT plan for a while as well). Last time I saw the area, it was being used as a dump site.
The Mediterranean/MK Resort #4 was supposed to have gone on a exactly were the photograph indicates. Again, not a lot of work was done on the resort. A Venetian/Mediterranean Resort was part of the Disney Decade as well and this resort made it quite far into development. The site was moved much nearer to the TTC because of land stability problems and so that the resort could use the TTC as its monorail stop. One of Eisner favorite architects was hired to do the design work (I forget if it was Stern or Gehry) and the architecture was, er, unique. Lets just say that it tried to evoke the feeling of the Mediterranean area rather than trying to be anything recognizable. One interesting aspect the centerpiece of the resort was to have been a giant AquaSphere, a concept that has showed up both in the Port Disney plans and in reality at DisneySeas. Some of the initial land prep work was started and quickly stopped. The construction expenses started to skyrocket and Disney lost interest in the high, high market after the troubles with the Grand Floridian and after Hyatts Grand Cypress proved to be such stiff competition.
This project seems to reappear every now and then. In the current conditions, I think Disney just isnt interested in going after the high end market. Especially when they can charge high-end price for moderate-end hotels.