OK guys, I just finished to read two more chapters: Rayman Legends and The Raymania. More interviews and already known trivia. I'll just point out things:
RL:
- Barbara was designed by Jean-Crhistophe Alessandri and co-designed by Christophe Villez. The idea of implementing a female character was something that Ancel wanted to do.
- The idea of implementing a narrative was again dropped. [Personal note: I think Michel Ancel won't rest until there's a Rayman game with his open-world and narrative elements
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- A life points system was about to be done but it was dropped.
- The start of the game was initially planned to make players go directly to a village in flames and rescue Teensies but it did not happen in the end
- Antisocial from the Trust musical group was planned to have a musical level in the game but it was not possible due to copyrights. Other music planned was the notourious music of Rabbid Jacob's movie.
- The Propaganda choir of BG&E and the Luchador (plus Skeletons) choir was entirely sung by workers at Ubisoft Montpellier.
- Apparently the musics that we heard in the E3 2012 for the Rayman Legends demo were only made few days before it
There are some artworks shown that are unknown to the public, and I can describe that one of them is probably an early boss concept for the Armoured Toad where he was naked inside a wooden structure with a Toad form, kinda like a Trojan horse. There's other concept art which probably corresponds to a scrapped boss (that I honestly think its a shame that it didn't make to the game because I think he looks pretty cool): a long purple serpent with a golden helmet and hammer.
Raymania:
This chapter covers the most important spin-offs and compilations released so far.
- Rayman M was an idea of Serge Hascoët. He confessed to be a big fan of Super Mario Kart.
- Michel Ancel feels sorry for not having done a bigger presence in Rayman M's development. He admits it is a good game but he regrets not having done anything in order to make the game even better.
- Michel Ancel revealed his disappointment about the iOS and 3DS ports of Rayman 2, saying that they are bad ports since they didn't bring improvements and even points as an opportunist act.
- Rayman did three preschool campaignes in Brazil in order to promote the schoolarship of kids, partnered in Unicef (I didn't know about this Brazilian campaign)
Note for Motormike: I found two mistakes in Chapter 9 that I would like to show my observations.
Nº1 - In the mobile phone games of Rayman Gold, Rayman Bowling, Rayman Kart and Rayman 3 you pointed them to have been released for Android. They were actually released for Symbian.
Nº2 - In the Rayman: The Animated Series text, there's a phrase where you wrote at a point "ainsi que Cookie et Flip (Its "Flips" actually), trois autres détenus." Isn't Betina missing in this text portion?
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. Yes, yes, check it out!
The "I'm Teensie and I know it" was already known around here thanks to an interview shown in the internet if I remember well. I know it was already mentioned somewhere in the forum. 
