Sundial Exchange - for Guardian and related canons

Is it intentional that there's no place on the sign-up form to indicate "these are the types of fanworks I'd like to receive" or "these are the types of fanworks I can offer?" In my excitement, I did my usual, blinkered default to fanfic, but of course there are a lot more options than fanfic. And especially with so many options, I imagine it would help to know what people can offer and what they want to/are able to receive.