I'm going to voice the obvious and most viable suggestion here and say that I'd love to see a version that just excises the elements not in The Hobbit book, creating a more standalone story that doesn't follow Gandalf when he peaces out of Bilbo's adventure, that doesn't include the expected elf/dwarf love story, and that doesn't get into the Five Armies' politics in the way that the book didn't.

That being said, I'm actually a fan of the expanded version of the films that ties into LoTR more, since Jackson had wanted to revisit The Hobbit again and update it to the tone of his later books but was convinced otherwise by his peers.