Hey! Thanks so much for sharing your thoughts, and thanks for all the kind words! I'm really glad that you got that sense of having to slow down and sink your teeth into the mystery - I tried a lot of different things to get that feeling from the investigation mechanics!
And those are all excellent suggestions! I really like the idea of red herrings especially - I've got a few ideas for unexpected things you could find in the archive boxes, and setting those up as red herrings could work very well.
Oh, and on your big suggestion, I've been thinking a lot about ways to structure the overall project. My current plan is to flesh out the Nugan Hand conspiracy and release that as one game - then if it goes well enough I can work on more installments about other related conspiracies!
Anyway, thanks again! And I hope you like the final product :)