enable 1.25x, 1.5x, 2x playback speeds for the screencasts
The playback speed can be accelerated to save time, when the narration is easy. Also would be great if there was an option to somehow download screencasts to an iOS device (perhaps via iTunesU or just iTunes?).
I understand that enabling downloading in an .m4v format - would allow for easy sharing of the screencasts via some torrent tracker, however that way it would be much easier to watch.
You can already download these using a private RSS feed (found on your My Account page). Use this link to subscribe in iTunes and you can download the videos for offline use (and iTunes can speed it up as well)