a few of us were looking into it but didnt like the cartoon style of things so we went with archeage to play alongside swg. its expensive but it has a ton of sanbox elements like being able to pick three classes to build your template, housing, farming, castle building/sieging with seige vehicles, ship/submarine warfare, cross sea trade runs, court system, ability to kill your own faction, deep crafting system, and plenty of other things. the questing it mostly linear while leveling but the end game is definitely more sandbox style like people prefer. it's been pretty good so far so if any of you have been interested but didnt want to drop the money to play by yourself, we have at least 10 people playing already.
LOL its expensive but it seems they know what theyre doing charging that much... it must be good to have a shitload of people drop 150 for an alpha :p