Well, I had a neat idea to go along with my hand written notebooks - the main building in the area of Llantern I'm currently working on is going to have a little cd player. When you interact with it, you get about a minute of voice talking about Llantern (Nye himself, actually).
Adding a bit of character to the people who renovated ages is a good idea, so I'm going to try.

Part of the dynamic is the DRC-like Nye being somewhat opposed to the pro-Yeesha Chris. I'm planning to have it as a running theme through the age, with you finding loose leaves of Nye's journal (such a poorly bound thing, honestly!) which detail the things Nye doesn't talk about in the exerts he leaves in the first area. This will be a nod to both Prologue's plot as well as Myst III.
One other thing - after a little time on DI getting through the Cleft, I noticed a bunch of stuff that would make me gnash my teeth and proclaim my suckery. That's not saying Cyan did much wrong - it's merely that I'm picking holes in my own stuff.
Screenshots tonight!