They had issues with implementing Duclair 1v1 into the automatch rotation. This was because the name Duclair (2v2) was already in automatch.. Gave some weird issues appareantly. Egletons was in rotation for a while. That map had terrible balance though. It was unticked by many players and eventually taken out of rotation and never brought back in.
If you use Dxtory for streaming, then you can also try to do a local recording at the same time. Then you still have all of the stream overlays (logo's scoreboard etc.) and a better quality compared to a direct twitch.tv upload to youtube. Downside is, you need a powerful PC and alot space on your HDD. Oh and then optimize everything with video-editing software and UL to Youtube