> The important part is to keep track of what's happening with your own connection to others, not what other peers are doing.
99%+ of the time any pair of peers has unidirectional traffic. The situation where two clients will have incomplete torrents and are exchanging data with each other is rare, like the first few hours after a brand new torrent hits the network.
The important part is to keep track of what's happening with your own connection to others, not what other peers are doing.