Whooo boy, there's a bunch there.
Onimusha-Ni Oh comes close, but why not both?
SSI Gold Box Games-RIP SSI.
Air Warrior-Die in Hell, EA. Air Warrior would be great in an age where the biggest flight sims are lobby-based deathmatches with one pilot per plane rather than fully crewed bombers and no persistent maps.
Gladius-Because it would mean more Gladius. Did Lucas Arts just close down without Star Wars to work on? Make freaking Gladius, guys.
Eye of the Beholder-Almost Human are doing great stuff with Legend of Grimrock and Might and Magic tried, at least. I'd still like to see a AAA dev take a shot at first person dungeon crawling today.
Arx Fatalis-and Dark Messiah while we're at it because those were both from Arkane Studios, but they're on the Dishonored train now so it won't happen.
Metal Gear-Not solid, Metal Gear.
Zone of the Enders-This is how I know God doesn't like me, because we have no more Zone of the Enders.
Phantom Dust-The attempts to revive it are vaporware. It won't happen. This is sad.
Jagged Alliance and Fallouts like 1 and 2-where low Int means you're a fucking moron and Jagged Alliance 2 is awesome.
Silent Hunter-Patience is a virtue. No devs seem to think requiring it is a good idea these days. They're right of course, from a sales standpoint but still.
edit- Oni-Stupid Halo being all popular and shit and distracting Bungie.
Dino Crisis-Zombies, no. Raptors, yes. I'm just kidding, I still like zombies so we need both.
Tenchu-If they can get the person who did the guitar soundtrack for the first one.
Three series I'm glad to see returning are River City Ransom, if those guys can pull it off, Underworld Ascendant and The Bard's Tale.
Igor-Rowan said:
* Startropics, featuring Mike Jones, a baseball player/archeologist that travels from place to place to discover treasures, even traveling to the past to uncover secret mind-control artifacts. So Unchaarted meets Assassin's Creed. But since his series started and ended in the NES and he hasn't been in any Smash game, it's unlikely we will ever see him again.
My man. I'd add the Guardian Legend from the NES era but it'd be hard to improve upon perfection.