One thing to understand if you want to guess at what's possible - on an iphone 3g, there can be as little as 4 megs available to a particular app. A free-roaming, non-instanced game is certainly possible in that, but it's not likely to look like PL does. That's not to say we may not add free-roaming components to the game, but they'll almost certainly be instanced (as the majority of pc mmo's are as well). It's that or reduce detail and visibility to almost nothing.