I liked that Deku wasn't a total retard like Goku and liked how he looked up to Bakugou and the developing relationship with Uraraka. He isn't spectacularly deep but when my only basis for comparison when I watched MHA in 2018-2019 was DBS Goku and Ruby Rose, he stood out as much more likeable. I also liked stuff like Deku vs Muscular, Allmight vs AFO, or the Gentle Criminal arc. There were issues but Hori's art was great and seemed to be constantly improving, Deku's power progression wasn't too jarring and Todoroki/Bakugou still were comparable, and the world just wasn't getting too oversaturated. I stopped in the middle of the Paranormal Liberation War arc so I don't know what happened afterwards, but I really liked the first 3-4 seasons.