I've been having cool ideas to fix up JIIWF recently, incorporating Dreamfinder and Flubber as well as making Figment less obnoxious.
Figment would be introduced as the first living and visible imaginary friend created by Professor Dreamfinder, one of the founders of the Imagination Institute who has gone into seclusion. The sensory labs are here for the sake of finding out how it was done and see what else could be created solely from a person's mind. Figment tagging along for the ride to make things more interesting considering the Institute's overall scientific and precise way of looking at the Imagination.(I may need help refining the plotline)
The Sound Lab now would have various instruments as well as speakers. After the left and right tones, you can hear the strumming of a guitar to the tune of John Lennon's Imagine and hear Figment singing a bit as he appears with his multi colored guitar in hand. Channing asks what he's doing there and Figment claims the acoustics are really good here and explains music is an powerful outlet for creativity and then he starts playing a rock version of One Little Spark as the other instruments in the room start adding into the score.
Figment's antics in the Sight Lab would probably be changed into a word game with the words creativity, fun, inspiration and imagination as code words and then leading to numerous optical illusions and effects going on throughout the room as the Sight lab verse of One Little Spark is sang.
The Smell lab would probably have Figment messing with the institute's smellitizers,triggering memories and ideas which would appear in the machine(which no longer goes slots) and accidentally knocking over the fouler smelling ones like limberger cheese or skunk scent until emergency pine scented air fresheners
Now, we move onto the Touch lab where we encounter Flubber(going where the lab door hall is now) who Figment releases not knowing what would happen. Flubber bounces around the room, knocking out the lights and you feel the gooey guy bouncing on you and the cars. This bouncing knocks the cars off course and out of the Institute.
Now, we finally encounter Dreamfinder, who tells Channing that Imagination should be released and not contained which has been Figment's point this whole time, and takes us all to the Dreamport, which Dreamfinder created when the Institute started to be more confining to imagination. The Dreamport scene replaces the Touch and Taste Lab door and goes into an added track section through the signs to Figment's house and then through what was Figment's house. The Dreamport scene is basically some of the stuff from the original compressed into these areas(Including art, literature and science). Figment, Dreamfinder and Channing animatronics would appear throughout this section and the finale would be changed as the power of the now released imagination creates many things within the formerly confining Institute with Figment at the center of the room singing the song as numerous creative things fly about the room. Before the ride ends, Dreamfinder invites us to the ImageWorks with is back upstairs.