Well, Im not quite sure if you can do this, but if you can report a comic to the admins/mods to see if its good for the duck.
Like if I see a rated T comic that has a huge amount of swearing (I mean over the top, a swear in every comic strip) then there should be a button to report the comic!

Again, im not sure if you can do that or if I hadnt noticed.

The second is the ability to edit extra HTML files. Its really annoying if I find a mistake, then I haft to upload a whole new file. It would be great if we had the option to edit an extra HTML file.

You're welcome to PQ one of us if you think the comic's rating is wrong. :] Or just let the comic author know? Sometimes people forget, or set the ratings a long time ago.

Editing the html in page would be a good idea. I think DD needs better file/html management and customization options in the first place.

I remember one of the earliest versions of DD, you could change the colors on your page really easily, just picking the new colors in a form and submitting the page. No messing around with code or anything....