Sorry to see that certain people have been giving you crap over this edit, ChainsawAsh.
(both I and my planned fanedit of Watchmen, "Two Minutes Till Doomsday", have also been getting some hatred from the 'Watchmen fans' over at the FE forums)

For Under the Hood, I really don't think that adding portions of the 'documentary' would improve the main film - stylistically, I think they're too different and if anything, the UtH segments would slow the film pacing down (which is already kind of a problem with the film anyway).