I’m not a huge Second Life fan or detractor. Mostly I’m annoyed that what seems like such a cool opportunity is marred by a horrible user experience and downright ugly graphics. Maybe Blue Mars (based on the Kim Stanley Robinson novel I’m guessing) is the answer.
Gorgeous, but with steep hardware requirements to accompany it. Some people balk at that, but I think pushing the envelope is a good thing if you have the value proposition that will push people to upgrade their hardware. If everyone was always targeting the lowest common denominator then the platform would never progress.