Was just thinking about how to implement all the new tagging features, and came up with an idea.
Why not, on each artist's page, have a small graphic or text box that displays the tags (maybe 3?) most often found in their work? The information could be actively drawn from the tag data for each manga under an author's name.
For example, Gunma's common tags would probably be harem, group, and schoolgirl. etc...
This way, people looking for new authors to read would get a general overview of an author's genre/plot/style habits, and decide whether that artist's style would be right for their personal tastes.