First impressions are a huge thing with gamers. If they don't like what they see right off the bat, that image will stick with them no matter HOW many changes a dev makes. In this case, this was the first impression:
These images were ingrained in the minds of many throughout the three years of dev time.
Not to mention, many gamers straight up hate change or what they perceive to be big changes, even when those changes are positive and could influence design decisions in the future. I myself fall victim to this mentality occasionally.
I actually think Dante in that artwork looks good (the cutscene model could be modeled better, particularly the hair). His look and the first trailer look a lot more dark and dirty. It could've been interesting.
Bayonetta, Raiden, Gene, Gideon, Optimus Prime
I think Dante's new design is OK minus the fact that they gave him a really goofy smile...
Anyway I'm playing the DE and loving the combat, especially with Turbo Mode, and the soundtrack. Really fun game. It maybe could've used a couple more enemy types though.