Michael Eisner , who had a major part in the park 's creation ever since the earliest development , demanded the opening land operate on the same principle as Main Street , U.S.A. in Magic Kingdom , but in a style more fitting to the Studios . Michael Eisner , who had a major part in the park 's creation ever since the earliest development , demanded the opening land operate on the same principle as Main Street , U.S.A. but in a style more fitting to the Studios .