The idea for the guild base is cool, I wonder if you would made Midgard like and actual kingdom surrounding the mountain, that way in the other world he could conquer villages and other kingdoms and empires easier and then convert then to his religion, at least I think that’s better than making him stay hidden in the guild base like Momonga after all most of the npc will be alive and would need food, all in all it might be a interesting idea, i think, but I really like how the novel is going. (But please dude, make them go to the other world and don’t make a cliff hanger in that moment, I might become depressed XDD)
Skip dude,,.. while its good you have many ideas in game, the true purpose of this is when they are transferred in game right? So just make some summary on gamr and start on the plot. Lol
look how can be several floors, I advise to mix more mythologies, as Mount Olympus, and a part of each culture on issues of deities and their mythologies. you can put several npcs as semi gods, angels, and other protective beings of various cultures
ormtr