I heard a rumour ages ago that the Guardians ride would include references to all old Epcot attractions - something along the lines that Quill had visited when he was a kid. Although with it definitely being called the Xandarian (spelling might be iffy there) Outpost that seems less likely

I do agree that Epcot doesn't seem like the best natural fit for GotG, but Epcot needs all the help it can get and it finally seems like it's getting it. And I cannot deny that the ride building so far seems impressive.