Just going to note these three questions have largely been unaddressed by the thread. I think that, given we have had prophetic dreams of a crab swarm, and that we found out that there are Oni who will attack at some point, the central defensible hall sounds great. As to the name, Ivor has suggested "Haskistadr," translating as "Danger-place". That could technically be our village's name too, if a bit bragadocious. Something like "New Gotland" would also be a very traditional way of naming our village, or naming it after our Jarl. Or even naming it after Blackhand, in his memory.