I guess they made the door like that so it can be useable for taller sprites too? What if someone wants to use tall sprites and the train? A double door is a much better option. Also tbh since when proportions really mattered in rm? If we want to be so finicky then all the RTP would be wrong, lol Look at the trees and the houses in the RTP, they are barely taller than the sprites, it's the chibi style (ever played Pokemon or old JRPGs?).