Use IPv6 for both your homepage and the stream
At the moment, both the Twitch homepage and the actual streaming servers are only reachable over the old IPv4. As there already are providers which only connect their users with DualStack-Lite (this means, IPv6 native and IPv4 over a relatively slow tunnel protocol), it would be good for bandwith-expensive websites like twitch to be reachable over IPv6 - for both the homepage and the streaming servers.
Daniel Manser commented
Yes I definitely recommend adding IPv6, IPv6 peering is often MUCH better than ipv4, it will therefore increase the streaming quality for millions of users that already have IPv6 - not to mention those that are on slow tunnel protocols...