because MMO isekai are popular in Japan and Maruyama decided to ride that wave along with the rest whilst also supplying enough differences from the usual bits to stand out from the crowd.
i agree that it would've been better in the manner you suggest, but Overlord isn't nearly as video-gamey as many other titles in the genre and it's mostly utilized as a backdrop for Ainz's encyclopediac knowledge regarding aspects of the Ygg, and, therefore, the world. besides, one of the core aspects of Ainz is that he's both OP and weak. in terms of power-levels he's the epitome of the world (so far), but as a ruler he has a lot to learn and it's a core part of his development in the series. it's also a huge aspect of the humor within the series.
Cooper Johnson
I do like reading what Ainz knows due to the game.
Robert Walker
I don't care, I just want her to be my chair
Dominic Johnson
Because that's boring, sounds like some no fun western novel.
Parker Jones
man those are some kino milkies
Owen Turner
Same. Shalltear is for tender sitting.
Tyler Bailey
I just binged the first season, and while it was exactly what i expected i deeply related to the MC.
Ive played several multiplayer games in my life and the feeling of losing contact with your longtime guild mates and such is quite depressive.
I got even more sucked in since i have been at that exact position of going from being the leader of a fun, activr guild to be the last member standing, it hit really close to home.