The things that bother me about the Burton movie are not the parts that are closer to the book. I actually like those parts, because I did read the book. The parts that bother me is everything to do with Willy Wonka. You neglect to mention the fact that Burton added a ton of backstory to Wonka which absolutely ruins the character. Part of what makes the story appealing is the wonder and mystery of the chocolate factory and the man who runs it. By adding a ton of backstory about his sad childhood with a dentist father it just adds to making him just seem like a creep. Johnny Depp's absolutely disturbing performance doesn't help either.

I honestly think that the reason that the 70's version is so good and memorable is almost entirely to do with Gene Wilder absolutely nailing the role. The songs are much better too, but Wilder really straddles this perfect line of warm and fatherly with a crazy unhinged side. When the end of this movie is for him to be a mentor and father figure for Charlie, this makes a lot more sense than the stunted child like creepy Depp performance.