You can also start a render request. Go to informationfreeway.org and press "r" in zoom 12 with the mouse over the tile you want to be rendered.

Thanks for the hint, zipping all of Wernigerode for example would have been quite usefull, as I have uploaded 11 tiny little bits of it. Combining it into one trace would really help me and others who may want to use it.
Maybe I'll upload a large version next time :)