Well, that's interesting... I sure hope they take a lot of the tech and such from Landmark. That game would have been awesome if the DEVs had listened. It was a Sony game... built for building and exploring and it was amazing and fun till they fired its lead... then it got stupid and blah... If a game could marry UO with Landmark and No Man's Sky I think they would have something. Leave Minecraft out because of its terribly bad graphics.
But an open sandbox game would be great. I'll try not to get my hopes up though... since many times it either fails miserably or isn't at all good kinda like Aria... not good and ugly.