I've been turning this one over in my head for a bit. It's not especially important, but I believe it would be a nice touch.

I enjoy submitting series to the manga catalog, but I like to keep track of them. Currently, I have a custom list and mark a series after it is accepted. However, I have a few problems with this. I can't add it to another list (reading, want to read, etc.) and there is no option for an author list. Another issue is that I tend to submit a collection of series at one time, and subsequently forget which series I have sent in. Now I list them in a word document so I can tag them later, but I neglected to do this at the beginning. Thus, there are series I added, but were not tagged.

The site already gives a number of authors and series submitted. Perhaps there could also be a feature that lists the authors and series submitted?

http://www.mangaupdates.com/series.html?added_by=297992
http://www.mangaupdates.com/authors.html?added_by=297992

there's a link to series on the Members page, and I guessed the other one.

Just use the above method. We don't make it more accessible because it's pointless for almost everyone

A just ruler amongst tyrants

While it's something of a hassle to go through and manually find your own lists that way, making access easier has been suggested before, and rejected. Although if it's really a privacy issue that's blocking it (as suggested in that thread), I don't see why they wouldn't consider giving you the option to toggle between your releases/series/authors/groups lists in your User CP.

Edit: Well, it seems I'm a bit slow. Nevermind.

On a side note, even though they don't list a count on your profile, you can also see the publishers you've added:
http://www.mangaupdates.com/publishers.html?added_by=297992