Pre-populate in next beta?

Considering no real answers have been forthcoming, I was hoping a more savvy WP guru could help add a hook to pre-populate fields of sorts (post data for now).

$user = get_userdata($userid);
query_posts(array(
 'category_name'      => $category,
 'author'     => $user,
 'tag' => $form_tag_identifier,
));

Would that be the right approach to take to get post meta data based on the logged in user so I can use the data to pre-populate the form?