Lego Minecraft Ice Castle upgrade

I recently bought set 21186 and decided to upgrade it some. The first thing I did was add a sliding piston door. Why do so few MC sets have doors? I then replaced the grass with snow and extended everything so it would fit on a MILS module. I built it into a short mountain to explain why there wasn't a back. (Might do more mountain modules at some point) the hollowed out mountain made a great bedroom and brewing cave.

Done