I was thinking a lot about Yume Nikki while making this. I'm glad you replayed it, and I'm sorry to have disappointed you with such a lousy reward for your hard work! I was really cramming to finish this game just to get my motivation up - consequently, 90% of the game was done during the final 10 days or so.
It sounds like to found mostly everything, I will say that there is a slightly alternative route you can take with the cloud form, but it's not very exciting. The "dead ends" (either literal dead-ends or characters that do nothing) are simply stuff I had ideas for but couldn't get around to because of my deadline!
I just made my first tweet: https://twitter.com/stwelin
I don't like to keep a dev log or anything, but I'll tweet my next game when it's done. It's in the works!
Thanks for playing!