Board Thread:Darwin/@comment-5175866-20130901170101/@comment-4018164-20130901190807

BertH has mentioned it's something they will consider doing if users request it. You can request suggestions via Special:Contact/feedback, or by opening a new thread in the Darwin board (like you did here), explain your idea and ask users that would like this sort of feature to be applied to mention it in the replies section, to see how many would want that.

Though i suppose it may be possible to use some JavaScript to change the submit target for Special:CSS to another page.