Well. In short, no (because I'd have to redraw everything).
The long answer is that the aesthetic embraces the "tileness" so that you don't have to worry about transitions between the tiles because it'd add a huge amount of time cost to the art and implementation - or compromises would have to be made in terms of range of biomes, or in terms of the rendering of the art. Basically I tried to make these as accessible as possible to as many games and developer skill levels as possible.
The solution I would offer is if someone wanted to take these tiles and modify them for their own implementation, it'd take some work on their part, and require art skill, but it is an option.