I dont know whether it is possible or not , as i am unaware of the complexity, presently,there is an option for mirror downloading which will help us to download even when our primary link is down. but this is not available for torrents. that is when a torrent fails to complete its downloading due to less peers,it stays as it is. my idea is, if i see another HTTP link which is exact the same file,I can add it as a mirror and continue downloading. will you consider it???