Abadom
If so many people are needed for expeditions, I imagine a good way to explain it would be that monsters come in waves, and within those waves there could also be packs, with each pack leader being high level and maybe they also have lower-level sub-leaders. The only reason the MC can easily navigate through the middle, lower, and deep floors is because 1- He's alone, and 2- His movement abilities are too convenient to sneak past levels; so, to give a little more sense to needing more members, it's because the waves consist of too many monsters and high-level adventurers are the ones facing the 'pack' leaders while the others take care of the lower-level beasts?
I Think the MC should gain a skill based on exploring. Specifically like a buff everytime he goes to a new location. Or maybe a location he knows nothing about. Maybe everytime time he discovers something new he gains a small permanent Stat increase. I dont know what the skill should be but it should definitely have something to do with his desire to explore.
Thank you author the notes after every chapter. Although I have yet to read one I will admit im sure plenty of readers have benefited from them when reading. I have no doubt eventually Iâll read them myself as thereâs bound to be something I donât quite get. So thank you, even if I donât read it. I do appreciate the effort yours a great writer.