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I see many people pine for the days of the "sandbox" games, typically UO and SW:G. Some point to AC1.
These were all skill based systems, but does skill based system mean "sandbox"?
The thing I see in common between those three is not an intentional "sandbox" design, but rather, no storyline. Both AC1 and SW:G shipped without any reason to do anything. That's a flaw in my book, not a bonus.
So, all the proponents of a sandbox design, what is your ideal system? Do you bother with a story? Do you bother with skills? Classes? Archetypes? What's the end game consist of? PvP everywhere all the time no limits?