I think if Dmc4 was the only point of consideration for a reboot, then I would agree there certainly are aspects of the game which need rebooting. The biggest problem with Dmc4 is it just rehashes different stuff from all three of the previous titles.
I initially complained about the difficulty myself but that was an obvious move to make the franchise more appealling to casual gamers. Imo, Dmc3's difficulty was only done to compete with Ninja Gaiden which wouldn't suit the mass market. As long as a game caters for all skill levels then I have no issue.
The combat did feel a little slow... I played Ninja Gaiden 2 prior to Dmc4 so the difference did stand out considerably. However, having two playable characters on offer there has to be at least some offset so they feel different to play with. In-terms of combat speed Dante was still the better of the two characters.
Personally, I don't think gore suits the series.. as its always been a little tongue-in cheek about its violence. The visceral approach of franchise's like God of War and Dante's Inferno suits them because its in direct relation to its subject material. If you look at titles such as Mad-world that gives the impression that the Japaneese devs are literally extracting the urine out of the whole western desire for blood and guts. If you then take Hayashi (Ninja Gaiden Sigma 2) he made a point of saying that the whole Ng experience isn't just about the violence.
All Dmc games have back-tracking so this was too be expected. However, it wasn't necessary to be so blatantly obvious about it. Out of all the Dmc games, Dmc 1 is the only one that really addressed the whole back-tracking issue. In context, roughly halfway through the game the location your in transforms back to its original form. The environmental visual styling changes with the whole tone and atmosphere becomes far more sinnister and foreboding. This leaves area's you've already visited familiar but at the same time different enough that you don't feel like your back-tracking. There are some truly memorable moments as well, one where you walk through a mirror into an area you have visited before and the whole area has been reversed, with a different sky, colour palette and different enemies. The bosses also had a truly epic feel to them. I still remember the first time I saw Mundus "Legendary Battle" where his wing tips touched opposite sides of the screen with head and feet also touching top and bottom respectively; my jaw literally dropped. Its intelligent design choices like addressing the back-tracking underpinned by that whole epic feel to the game that is something which the franchise hasn't quite managed to recapture and makes the first game still the best in the series, imo.
White Charon: as I said I've worked in the industry myself so I am aware confidentiality issues. Hence, my question is very basic and doesn't directly relate to gameplay mechanics, storyline developments etc, or require any of the devs giving away privileged information. Have a look over at Eidos for Deus Ex 3 all the devs there answer questions without directly giving anything away. And, its fair to say that Eidos are in a similar situation to Nt regarding updating an already well established franchise; the original Deus Ex has awards coming out of its backside. Ultimately, all I am stating that at least some interaction would be better than none.