I'd buy a remake of a little game called Chase the Express, or Covert Ops: Nuclear Dawn for you American people. It was originally on the PS1 and was truly terrible in a 90's action movie sort of way. You know, back when stereotypical villainous Russians were the ones with the monopoly on terrorism. It was kind of like Under Siege 2... except the protagonist isn't a Navy Seal turned chef, or Steven Seagal for that matter.
I'd also love to see a remake of Tomb Raider: Angel of Darkness. I thought it was a really great game with an interesting storyline. Plus it was actually nice to have a break from all those tombs, whatever anyone else says. Shame the game itself had terrible controls and was buggier than an Obsidian game buried in a pit of spiders. I'd love to see what Crystal Dynamics could make of it though.