Proper adoption of IPv6 by BitTorrent clients. Since IPv4 addresses got exhausted, it became very hard to properly set torrent clients. In many residential netw

Proper adoption of IPv6 by BitTorrent clients. Since IPv4 addresses got exhausted, it became very hard to properly set torrent clients. In many residential networks it's impossible for the end user to open ports. This slows down peer discovery and upload/download speeds. Also incorporating distributed search/discovery into clients. Tribler does something along this lines. I wonder if the adoption of SSDs to replace conventional spinning rust HDs is contributing to decrease in torrent usage. While faster, SSDs tend to have less storage capacity when compared to a similar priced HD. Perhaps people are less inclined to shared files when they lack spare local storage capacity.