I say just the first 2 for economic and Capcom based reasons. Capcom does make anniversary games and they already did and I will recall another Capcom franchise....MegaMan...it had 2 series the Classic & X series...those both had an anniversary collection and later had a remake of their first game...well the Classic MegaMan remake was just there for fun while the X remake (Maverick Hunter X) was to retell the story of MegaMan X(1) in a more serious and direct note and even put more emphasis on things such as Vile, his character, & his origins, how Mavericks came to be, X's relationship to past Maverick Hunters who too became Mavericks such as Sigma Chill Penguin, how Zero's death affected X, & X inner conflict of being a Reploid that has emotions and feelings as well as trying to understand if really hunting down his Reploid brothers and constantly slaying Mavericks was the right thing to do, and X coming to stride with why his creator gave him something other machines don't have...humanity...stuff that Capcom wasn't able to put much emphasis on in SNES game and MY GOD it was SOOOO Amazing and it was Capcom's finest storytelling yet and it was on some Christopher Nolan type sh*t. It was basically a retelling of his origins story of how he became the Maverick Hunter everyone knows and respect but I mostly like the Vile stuff...it was deep and was very enjoyable to play as him and witness the story of MegaMan X through his eyes and even his ending was amazing. I've come to respect Vile before I thought he was just like his name...vile...but I grown to respect him and how he had honor.
Anyway...what I'm saying is if Capcom does remake....wait they can remake DMC1..for the PS Vita obviously....I mean the Vita doesn't really have any good games that aren't already on the consoles. So if they do they'll most likely remake the first 1 because they tend to deal with the game that created the series and started the fanbase.
Plus they can add many extras....however...it won't be very DMC1 like if they go with DMC4's control scheme but heh whatever...mostly a Trish mode (or just make her playable) or at least make Trish more important to the story or go with Kamiya's original plans.
Fix everything wrong about DMC1...its crap camera, a better camera view and control, weapon switching on the fly, give each weapons more combos and moves, also add more weapons if possible, improved graphics....they can even change up the stages and their layout design if they want, had some extras (artwork & the such), Bloody Palace Mode, even possible had some features from DMC3 & DMC4 and heck DmC if possible like some areas/stages, return all of DMC4's difficulty settings, add in some new or old enemies from any game DMC2-DMC4....but most preferably DMC4, Boss Battle Mode, & even a Sparda mode....a mode where you can play as Sparda and you have access to Sparda, Yamato, Rebellion, Ifrit, & etc and it is Sparda so all cutscenes should be changed or removed and replaced with ones based on Sparda and it is about him stopping Mundus's invasion plans. Replace Nelo Angelo with another boss....a new character that fights sorta like him or has a similar fighting style concept. As for Sparda's story...I say to make a good Sparda story without the area ruining the story...I say stay limited to amount of cutscenes as possible just show an pretty lengthy opening cutscene and just boss battle intro cutscenes for only (Phantom, Nelo Angelo's replacement, & Griffin as well as Mundus) and make the sky look odd or eerie to make it look like he is in the Demon World all this time and change Mundus's imprisonment room to look like a throne room but the final battle can still take place in the air or space or something then when it switches back to land it should take place in his throne room and after the battle Sparda knocks Mundus in a pit and seals him away....you know what I should make a thread for this.