Seconded.
An overwhelming amount of the Popular New Titles slider is just big-titty schoolgirl nonsense. Even if it can't be hidden entirely it'd nice to have some level of user-customization or interest-based tailoring, since the vast majority of stuff on the list is often just repellent to me.
I know that's a big undertaking, but even just a 3-dot menu with a "don't suggest this manga" option would be a huge improvement.