I was thinking recently about the idea that HISTA is out-dated, overrated and just plain and simply a one-time attraction anymore no matter how many days we stay.
And with the animated films going 3D, even retro-3D (e.g. Toy Story 1&2)
The introduction of shorts (15-20 minute) 3D films could be quite a draw.
They could run a "menu" of features throughout the day, this way a guest staying for a week would get to seem quite a few different shorts.