What games do you think should/will add cards?

Garry's Mod Binding of Isaac Fortix! Those are just few I want at this moment :D
Anyways this is just more money for Valve but maybe we'll get HL3. But whats that character at the end of HL?

Fortix

Probably indie game: the movie

Killing Floor

Batman: Arkham Asylum or Arkham City would be awesome. I'd even spend my money to get those games level 5 badges.

l4d2 and skyrim will surely get cards. Super meat boy is possible too. Also saints row 3/4

terraria

L4d2 , Magicka and Bastion

Valve Games in General the newer ones, and the ones with a 3 in the title. Oh wait...

CS:S, It's better than CS:GO.

Also Garry's Mod.

And all the other games I play.

Torchlight 2

3D Custom Maid

I feel like L4D2 and Binding of Isaac fit the Steam trading card theme pretty well.

FTL, Torchlight II, Castle Crashers, Bastion, Civ 5, X3: Terran Conflict, L4D2, Payday, Poker Night, Plants vs. Zombies..
i feel like those should have cards

All of them I hope :P

I couldn't care less about cards or badges, but so far I got 4 games for all my Don't Starve, Borderlands 2, Half Life 2 and Portal 2 cards, so bring it on steam!

Magic the Gathering

I'd like to see some Binding of Isaac and Magicka cards and badges.

Any game that use Steamworks will get cards. Probably any game that has workshop support as well.

Trine 2 should, would love to see some backgrounds.

Since HL3 was released and it has a lot of people playing it multiplayer i think definitely will be card for it

For now it should be games that are already relatively well known, but need a little boost. Also games that have a good community and dev team. I think the current choices (And the upcoming new waves) are spot on, with the possible exception of BL2. Did it really need the sales/player boost from cards?

Awesomenauts would be a good example of a game that's pretty well known, but a boost wouldn't hurt at all.

As a counter example, Terraria would be a poor choice. While many people enjoy it, and it's relatively well known, the developer is far from committed to the game and only recently released a patch to help promote his new game. Another poor choice would be something like Analogue: A Hate Story. While a great game with a great developer and community, the game fits far too narrow a niche and does not need any kind of boost to help it along.

I'd kill for fallout cards, ideally Fallout 3 ones.

Amnesia: The Dark Descent would be awesome with a card for each monster and/or levels (Main Hall, Prison, etc...)

Probably most of the Valve games will get their own cards ;)