http://www.bizjournals.com/orlando/...ment-snags-23-acres-on-universal.html?ana=twt
I dug through some of their other brands. Dont think the aquariums, mini-golf or Louis Tussauds will happen due to I-Drive already having those. I'm guessing the Mirror Maze, Haunted Adventure of Moving Theatres makes more sense.
Thinking about it some more, I think if they really wanted to maximize that 23 acres, why not do multiple brands. Universal Blvd has the critical mass to accommodate Ripley's very own I-Drive 360-esque development with three attractions.