I have started to change my animation editor to support hexagons. Here is a preview. The units should be aligned with the green lines (they join the middle of the opposing edge, and so a unit would follow this line when moving from an hexagon from another). I think that for infantry and cavalry, the alignment is quite close, and I should be able to reuse existing graphics with a simple conversion. Even for the ship, the difference is not so big. Sure, it would be better to have units specially made with the correct orientation, but I think here we are close enough to make it usable.