Binary package hint: apt

apt-get apparently currently uses some simple wget-type sequential download algorithm for all its functions that download anything from the net, like update, install, dist-upgrade, upgrade, build-dep, source etc. This really does not well use the available broadband bandwidth of most users. Hence I am forced to use home-cooked scripts to extract the URLs to download and then pass them to aria2 (GPL) to download, so that the thing is done faster.

Granted, the user may not want his entire bandwidth hogged by apt-get, but at least provide this as an option -- use a faster split-download algorithm, or at least use a good backend downloader like aria2 which provides high-speed downloading.