The roof issue is of some concern. As far as using Npc block tiles, this will almost never happen. Those tile types leave too many opportunities to take advantage of enemies. We will look into possible solution maybe just simply changing one of the warp tiles to a slightly further location from the entrance and offering another route into town and into Trispass (and any other area that MIGHT be added in the near future-.^ ) there is a more serious that we have to look into, that will take priority first. Until than, we deeply apologize for the weight of burden you experience during gameplay.