This is the best harem/ecchi I've ever seen. And I've watched DXD.
While true, this is more because of how terrible harem/ecchi is as a whole than how great SnO is.
I personally thought it had more comedic value than Nichi Bros. It did seem slightly unrealistic how the pervy main was always able to resist the busty/loli/more busty slave angels on a regular basis.
I'm still mad the last arcs will never properly get animated.
>no pandora Astrea
>no sempai backstory
>no glorious granddad
And perhaps most importantly the entire scene in pic related
You haven't seen enough. Try T7, it has a god tier harem with a god tier MC that blows SnO away.
AiKora/Love&Collage and Sora no Otoshimono are easily the best comedy harems out there.
SnO always have had this little something that doesn't makes the characters feels generic like every other harems. Also, actual plot behind gives it more depth as well. The number of "shit is getting real" and "this is way sadder than it should be" moments are way too high.
Don't forget best bro Yoshitsune becoming best bro.
It's crazy how he was at first a bitchy rich boy and ended up becoming one of the best characters. I just can't explain with mere words how much I love this guy.