The illustrations in this series are amazing and visually distinct from typical manga. The characters and their goals are the primary focus of the plot and the conflict is mostly internal and interpersonal. I really enjoy this series and the recent animated adaptation is lovingly faithful to the source. I will admit that the series has only slightly become slower but that's primarily because (potential spoiler)

the main character has overcome his original hurdle and the new conflicts that arise feel smaller in importance to that one

but I don't think the quality has dropped at all and the most recent arc still has my full interest! Also, as an art student, the setting appeals to me specifically but isn't so specific that laymen would be put off.