1: Eternal Darkness
Jesus, come on, Nintendo. People have been asking for a re-release/remaster for years. It's time.
2: Alan Wake
I just want to play it and get me some juicy PS trophies, dammit.
3: Silent Hill series
Just remake 1 and remaster 2, 3, 4 and Origins.
4: Clive Barker's Undying
The game was, and still is, great. But it would do with a facelift and a port to modern platforms.
5: Call of Cthulhu: Dark Corners of the Earth
Sure, it was buggy and janky as fuck, but it was a rather good video game adaption of Lovecraft's Cthulhu mythos. I'd buy a remaster.
Bonus answers:
Vampire: The Masquerade - Bloodlines remastered for consoles with the fan patch baked in.
Blood remake for all platforms.
Nightmare Creatures remake for all platforms.
Realms of the Haunting remake for all platforms.
Dead Space trilogy and Dante's Inferno remastered as a Visceral package.
American McGee's Alice and Alice: Madness Returns remastered.
Lollipop Chainsaw remaster.
Splatterhouse PS360 remaster.
Resistance series remasters.