The main character isn't a self insert caricature, he's still human which ironically makes him far easier to relate than the usual isekai MCs: stoic or idiotic emotionally stunted losers who happen to stumble upon incredible powers.
The side characters aren't there to be one note glazers of the MC, they actually seem like they have their own goals and motivations.
The plot is different from the usual "I was a worthless dude who became god and had sex with all these baddies who are weirdly attracted to me though I have the personality of a cardboard box."
The dialogue actually serves a purpose in building the world and fleshing out the characters.
The world building is also different, 100 worlds that all seem to have different races and customs that actually serve to influence the plot.
Bonus points: No slavery. I fucking hate when the MC has all these god tier powers, sees slaves, and just hand waves it away like nothing despite being on the GOOD side.