Europa. Remember the first picture issued about Destiny? The Fallen, with the huge spider Walker in the background.....in a snowstorm. THAT would be awesome. I don't play as a Hunter, but how cool would it be to have missions or bounties, where you HAD to have a Hunter in your fireteam for their "tracking" abilities? More things like that should be added to Destiny. Warlocks could use "magic" to cloak the team, etc. Titans for their strength, or use of the Hammers to hit switches that are out of reach to gain access to the next section, etc.