Vintage Cars was there in 2006, no?
Before Gingy's, it was Spongebob Flypants, in roughly the position Seabed Splash is now, IIRC. Not sure which year it arrived though?
A well put together list - even if not entirely accurate. I think although the attraction count might not differ that much, the quality of each may be the difference. This is the same story for Movie World however - the loss of attractions like gremlins (although scooby is a fair replacement), studio tour, special effects show, maverick \ stunt show, LTRR, PASS... while the numbers don't make things look bad - the actual experience from then to now is vastly different, and arguably not for the better (at either park).