An isekai that falls at every sense at being an isekai

Before I talk about what I dislike about Overlord there are things I did like about it, really only being the plot. It seems interesting when reading it on paper, Yggdrasil is one of the biggest VR MMO’s but after 12 years the servers are being shut down, and only a few dedicated players like Momonga are around. He stays until the end, but when the timer ends, he is teleported into the world of the game inside of the avatar he created. His goal now is to rebuild his army and find anyone else who might be trapped.
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At the start I had some hope, but it quickly turns into the boring fantasy that a lot of these stories end up falling into with the hero who is too overpowered to be threatened and too anonymous to be interesting, like Momonga. He is seriously the least interesting main character in anime, the only redeemable thing about his character is the design when the mangaka actually wants to draw him in his skeletal form. It’s obvious that the mangaka doesn't even bother telling us who Momonga is outside Yggdrasil. Most isekai you get the story of who the main character was in the first chapter(or first couple of minutes if animated) followed up by them dying or being transported into the new world. We have no idea what kind of player he was or any insight about how other players viewed him within the guild. We don’t even get to see his face outside of the VR gear, we just get a glimpse of his generic looking main character haircut in a single panel. The only positive we can get from this is that his character is an annoying pervy otaku who gets thrown into insane scenarios like a lot of isekai does. Aside from a couple of boob grabs, he does take a very logical and smart approach to his situation. He doesn’t freak out at first, and makes an effort to meet up with his old team members and begins to get allies and strengthen his defenses.

Once Momonga gets used to the world, the story’s interesting plot just falls apart. He has a group of NPC minions that obey everything he says, he has a small number of girls that fight for him. One of them, Albedo, is following him simply because he rewrote her code in a second, because he knows how to do that. He’s insanely overpowered thanks to decades of grinding, so nobody can actually fight him. He certainly doesn't want to return to his normal life because he has no family, friends or a girlfriend, but neither does he have any to anyone in this universe besides himself and his minions. So where’s the drama or conflict? What’s his real drive to keep going? I don’t even think the writers know as far as I’ve gotten. It’s not like he’s gotten a new world to explore, his base is located in a peaceful grassland and there are generic medieval MMO villages with some other NPC’s, none of it is compelling in their own right to give any information about the world.

But why bother with an interesting protagonist and some interesting drama when you could conjoin the most barebone fantasy tropes with an overdone and deadbeat premise and stop there? Why waste your time writing a compelling medieval isekai when you can spend your time having a loli vampire and a yandere angel fight over who wants to be the wife of the main character? I pray for the manga's sake this isn’t a continuous running gag through the story.
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The artstyle does look like it belongs in a video game, I’ll give the mangaka that. It really does give off that horrendously over designed video game character with terrible armor and no style to tie it all together, I can see this being in a mobile fantasy RPG though. Momonga looks like he was ripped straight out of one, his design just reeks of edgy 10th grader drawing a dungeon boss. Admittedly it is cool when it's put into detail, but the artist quickly puts him in some plain looking black armor or a mask. All of the other characters are just your run of the mill generic fantasy types.
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It doesn’t make you feel like you’re being transported to a new world, it uses old isekai clichés and hopes the reader will fill in what the mangaka couldn't bother with.