Ok, great to know. The achievement logic is half-baked because I don't really know if people would care or not. The way I'm reading you it sounds like you, at least, would like to see it more fleshed out. Which is cool, I got a ton of ideas for it!
Why would you like to click-and-drag and focus on the cards? Where would you drag them? This is interesting, I haven't thought about this at all.