"...constantly flip flopped on the canonicity of the title (at one point it was called a "preboot", a prequel, a reboot, and an alternate universe all at the same time, depending on who you asked); constantly drew comparisons to the old series (probably the worst mistake they made); and generally went with "You'll understand when you play". It was bad and full of miscommunication."
Capcom made it clear from the beginning that DmC was a reboot of the series. If they used the words prequel or preboot then could you provide links for those. Ninja Theory used the words alternate universe later on. Thus making it clear this game does not take place in the same continuity as the previous DMC games. There is nothing confusing about this. Its like the Batman Begins reboot, which I think they used an example at some point.
"It was never about using the best engine for the job."
How do we know MT Framework was the best engine for the job? Based on the quality of Capcom's own games like Resident Evil 6, Resident Evil 5 and DMC4 there is not sufficent evidence to prove this one way or the other. Ninja Theory went with UE3 because of their experience with the engine. Its was simply DMC4 fans who have no clue about programming who tried to tell Capcom and Ninja Theory how to do their jobs.
"The story wasn't deep, no. But people still loved the characters."
The characters are different in every game. There is no true sequel to DMC1 for obvious reasons. The other DMC games might be good games in their own right, but none of them are true successors to DMC1. In terms of Dante, DMC4 Dante was extemely far from the original iteration of the character. Turning him into a camp cowboy with no humanity. He wasn't Dante. Capcom also changed Lady and Trish into Playboy fanservice. And they also introduced the new main charactes, Nero and Kyrie. DMC4 was confirmed to be the end of Dante's story and the beginning of Nero's story. Besides, DMC1,2 and 3 actually had good stories. DMC3s story was actually pretty good. Its DMC4 that had a predictable story, with an overabunance of cutscenes and dialogue.
"Devil May Cry 4 had such backtracking because developmental issues swallowed a bunch of developmental time."
All the DMC games have a signifant time spend in previous levels. In DMC1 both the first and third acts of the game take place in the castle. Which features reptition of the same areas. DMC2 featued Lucia's missions on a seperate disk which were mostly Dante's missions in reverse. DMC3 featured a lot of reptiion through the tower featured at the beginning of the game. DMC4 was not the first game to have backtracking or repeat environments. Development time or not, it was something that had to be revised for furture games.
"Ninja Theory boiled all compliants down to "it's about the hair". They called the fan "sheep" at one point. Tameen Antoniades openly said "I don't care" in regards to the fans reactions."
Ninja Theory and Capcom both discussed the combat in depth, theres videos on Youtube where they do nothing but talk about the combat. It was actually Alex Jones of Capcom America who called the dissenters sheep at once point. Ninja Theory can't control what Capcom America say. Besides its actually true they were behaving like 'sheep'. Tameen Antoniades was sent death threats and has been harassed with someone even going as far as pretending to be him. Telling those thugs that he didn't care was among the best things he couldve said.
I've been a fan of this series since DMC1. I admit even DmC is not perfect. But that does not give me the right to do what these DMC4 fans are doing. They are a complete disgrace to the gaming community. If they don't like the game don't play it, its that simple.