1 - The floor has a bump or displacement applied -- set the minimum displacement rate a little higher -- try 0.1 2 - Turn on Polygon smoothing for the figures in the render. On both of those nother figures, those poses can be achieved with a lot less deformation -- I know it doesn't matter since you plan to postwork the piece, but I sorta felt obliged to mention it. I'd be willing to give a go at it if you'd like. Love the idea, btw! :)

thou and I, my friend, can, in the most flunkey world, make, each of us, one non-flunkey, one hero, if we like: that will be two heroes to begin with. (Carlyle)