Let's be fair. The Sparda game is quite difficult to be made. First of all they need to create a whole new setting. Probably a whole new Devil Kingdom/World. Since in all Devil May Cry(s) we only get a glance of the Devil World in the last missions. But in a Sparda game, where the main characters lives in the Devil World (since it will probably be before Sparda defeated Mundus) they need a whole new world.
Second, they need to create a character who's serious, wise and more awesome than Dante/Vergil. Kinda hard, seeing that even their new character, Nero is a smartmouth. Also they need to tell more about the Devils. Sparda is a Dark Knight. Yeah, ok. Does that mean there's a whole bunch of knights like Sparda out there?
Third, I don't think the game would begin with Sparda having all the weapons from the beginning. He would probably have Force Edge (unless he finds it in the end, as his greatest weapon) or Yamato.
For the other two, since they are Devil Arms I'm guessing they were Devils before right? They need to create awesome and really powers Devils to show us what was Rebellion/Yamato before Sparda got them.
Fourth, we need Sparda to face adversaries which are strong like the last bosses of the other games. And we also need a real story between them, Sparda, and his decision to seal them rather than banish them.
Fifth. In the DMC1 manual Sparda was said to have his own troops. I'd like to know if these were generic soldiers with no character or promising Devils that were on a par with Mundus' elites - like Phandom and Griffon.
6th. More about how Sparda met Eva, and what happened to him afterwards.
7th. I'm guessing Sparda had allies in the human world. Since I don't think that priestess was killed by him or something, but voluntarily offered her blood. Remember also those guys from Devil May Cry 2. We need more about that sort. How did Sparda decided to help the humans?How did the humans were of any help to him?
8th. Sparda was way more powerful than Mundus. Isn't that weird? A mere knight being weaker, where Mundus immediately took the seat of the Emperor when he was born? Perhaps Sparda was granted that power? Perhaps he trained in some unspoken place? Surely if he was born with all that power he would be the emperor. Unless there was some other reason.
9th. The fact that Sparda turned against his demon brethren means he had reasons to do so. What where those reasons? Supposedly he was born and raised in the Devil World, so seeing an army of Devils devouring an army of humans would be like his every day activity. Since he had a rank of a soldier (unless this Dark Knight thing was a title given to him by the humans) he probably had managed victories for the Devils before which made him worthy of that rank.
10th. Except for all this, we need a game which would be quite hard. Dante goes to places that are peaceful and then Devils start coming out etc etc. Sparda is in the Devil World where everything is against him from the beginning. The 1st stages should be like the last ones from DMC1/DMC3. And as the game progresses they should get tougher. Also Sparda CAN'T have the same moves as Dante&Vergil. It would be logical to have them, but also boring since he would be something we've already seen before. He needs his own moves/maybe some other Devil Arms except the ones we know/Guns/Summoned Swords/Whatever ->Styles but NOT Dante's or Vergil's. We need new stuff remember?New taunts:lol: And stuff like that.
So if they try to make something like this it would take them forever. DMC4 did not have even half of that. I mean, they had a Dante pretty much already made with a few modifications. The story was written quite rashly given the result. The characters (besides Nero & Dante) where generic. Sanctus->Typical mad vilain.
Kyrie->Typical damsel in distress.
Agnus->Typical mad scientist.
Baal->Typical stupid bad guy.
Credo->Typical guy which changed sides when his loved one was used and ended up not doing anything.
Echidna->Typical stupid girl monster.
Berial->Typical DMC Boss. Recognizes Dante, says usual things to him etc.
And THAT took them 2 years. Imagine the Sparda game
PS: I don't hate DMC4, don't get me wrong.