I like games from Matrix Games and Paradox (EU2 & HOI 3), and Civ5 just felt...... empty. It just didn't seem very deep. Elemental seemed deeper when I played it, but due to bugs I couldn't finish a game due to crashes. Are these crashes fixed now?
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In my opinion/experience: crashes are fixed, the game seems technically sound. Not to say it's perfect, but I don't crash any more than I do with.. say, Civ4:BTS, which is to say I'm not shocked if I CTD once in an evening of playing, but I can't remember the last time it happened twice. As is always the way with technical issues, your mileage may vary - some people didn't crash even in the beta days, and some still say they crash constantly, but most people seem able to play without/in spite of any technical problems.
Gameplay still needs some work though - there are a lot of choices to make, many different ways you can play the game, but those choices don't feel as interesting/meaningful as they should be due to balance and AI issues. Disclaimer: haven't played 1.11 yet, they say it helps with the AI, maybe someone else can comment from experience.