Nothing with less than 6-7 years in the market should be remastered unless is extra mega ultra rare to find or get. That said a few 6th generation games are good options, I didn't have anything in mind but after reading the thread I found some good candidates...
Onimusha trilogy
Power Stone 1 + 2
Star Wars: Rogue Squadron compilation
Kotor 1 + 2

I'd like to see Super Smash Bros. Melee remastered. Since it was made in 2001, playing on an HDTV would cause lag from up scaling the resolution, so I have to play it on a CRT, so an HD version would be great.

A Half Life 2 Remaster has just been released on Steam.

Edit: http://store.steampowered.com/app/290930/

Definitely F-Zero GX if a new one is not even in the works.

Arc Rise Fantasia, Fragile Dreams, Final Fantasy Crystal Chronicles: The Crystal Bearers. Excitebots Trick Racing... With improved online, yes please!

None. Would I like my favorite games to have better graphics? Sure. Would I like a studio to spend time on that instead of a new game? No. Honestly, I think remasters are a joke.

Boy, I really, really hope that that never happens. The last thing we need is to encourage the toxic fanbase that surrounds that game.

What games suffered the most from last gen hardware? One of the first that comes to mind is Skyrim. Its framerate dipped SO often but even if you were lucky enough to avoid that you had crappy looking environments (the bushes and textures popping in) and long load times. Give us Skyrim with a stable framerate (30 is fine), 1080p, all DLC, shorter load times, and improved environmental detail and I'll be one happy camper. They already have a PC version so this won't delay the new ES or Fallout very much at all as a small team can do it.

ME is in a similar situation. ME2 especially suffered framerate dips and the Anti-Aliasing was awful on last gen. Give it the same stuff I just asked for in Skyrim and I'll be there EA (ALL the DLC this time). This one makes even more sense to promote the next game in the series.

Beyond 2 Souls. Now this one ran pretty well on PS3 considering how pretty it was. I want this remaster for one reason alone. MAKE A CHRONOLOGICAL MODE! Seriously guys that was the dumbest decision ever. The story is great. I've literally gone back and replayed it chapter by chapter in chronological order (which was annoying as hell and none of my decisions carried over so this is NOT a solution) and it's a much better game than the jumbled mess of a story that comes out when you play in Cage's order. I think this remaster with a chronological option (hell lock it behind NG+ if you must Cage) would increase perception of this game SO much as it really does nail basically everything else. It's the only thing holding it back from Heavy Rain level success. Now of course throw in 1080p and some increased effects and such but the main thing I want is my chronological story.

Wow.. now that I think about it, a lot of games that I want remastered already has... :/

I would like for them to remaster old Tales of games so I could try them all though..

Chrono Trigger, Mario Party 2 or 3, Castlevania: SOTN, Ranger X, Vectorman, Earthworm Jim, Culdcept, Ecco the Dolphin, Mutant League, Super Mario RPG, MVP Baseball, Stunts, Dune...

Elder scroll morowmind and warcraft 2