There's some areas where they've raised the bar so much I wonder how they can do it better. Leaderheads, for example, are now full-screen animated and talking characters - what could they do better for a potential Civ 6 (other than, for example, different outfits per era which would take up a lot of room on that download!) Would it be liked or disliked by the community if, when Civ 6 came along, all the graphics were of the same format as Civ 5 - making it straightforward for modders to port in new leaderheads, buildings and units? In the highly unlikely circumstance of them doing this, they would need to have a different leader for each of the civs (i.e. a different historical figure to their Civ 5 counterpart) - which shouldn't be too difficult - and, perhaps, the facility to have multiple leaders per civ.