I'd like to make a suggestion about the manga presentation page. Sorry if it's been already pointed before and sorry if my english is bad.
-Add "Circle" name as most doujinshi have that, some times artist doesn't even use his own name or pen name. Dunno if it's the same for serialized manga but one artist do come in my mind: OH! Great (OGURE Ito).
-Add the possibility to add various author/artist the same way you add links or related manga as sometimes they do have different artist like for doing a collabo or even Anthology comics too.
Like when adding a new artist, you put "&" between them and if there's a lot like for Anthology comics, put "," between and end with a "&". Something like that.
It's also to ease the research for artist since currently putting two name is considered as being a single artist.
-For manga and doujinshi that doesn't have an original manga (ex: KanColle, Touhou), how about adding a "Based Parody" textbox or something if we want to look at only manga/doujinshi based on that? Something like in doujinshi.org.
-About the status, I think we should rename it or do something different. I got too used from other manga reader website where the status is based on the translation progress, it makes a lot of confusion for most of us.
Also, some manga happened to be discontinued (just learned it from Tsukiyo no Fromage for example), so a "Completed" status would be incorrect.
How about instead, we put the status for translation progress and we add the numbers of Volume and Chapter just like on MyAnimeList in case if it's completed in the original country?