Thanks for the questions.
1. We will most likely have achievements. I'm a big stickler against achievements because I feel like a lot of games have them and they're not very interesting or fun. Great achievements can make a game better, but I don't want to have achievements just so players get some prize for something silly. My favorite achievement is the "one bullet challenge" from Half Life 2: Episode 1. It fundamentally changed how you played the game and it was a really fun thing to think about. Soren is strongly for achievements, so it is very likely that we will have them. When? I'm not sure, but closer to release.
2. Yes! We just need to get around to putting them in. What would you like to see in the trading cards? We may wait for more finalized art for the trading cards, but they are definitely going to be in the game.
3. Yes! Things are moving along pretty quickly in that regard. Quickmatch does do some auto-matchmaking currently, but we're not exposing a lot to the player right now because we're sorting out a lot of the problems that have been exposed by going live. I don't want to give a date, but I do feel like we will have some ranking/ladder system before Christmas and that with each new beta there will continue to extend the multiplayer experience, especially in matchmaking.
4. I'm not totally happy about our "daily game" feature, so I really want to try to figure out some solution to make that really great and interesting, or find some way that players have a reason to come back to the game daily to experience some new twist. There's a lot of other things we've talked about, but I don't want to spoil them for you.
I hope I answered your questions well. Thanks for asking them!