We tested this map.
Sure, with some work it could work, but atm it got some problems.
The "houses" with two entrances: too easy to defend, and the mobs only choose one of the stairs. The stairs is too narrow, ONE guy with a shield and one guy with an axe stopped a whole wave of weeabos. The walls, same problem here, too easy to defend, the npcs only chooses one entrance, and those entrances are too easy to get to.