Yesterday I sent this suggestions to Dave and Jamie:

- Start Sunday keynote at 9:30 and add 3 more slots after the keynote;
- Reduce the number of LT's on Sunday(we don't have enough LT's in the queue in order to fill the empty slots) or move some to Saturday and add 3 slots before the closing talk;
- Reduce the closing talk to 15 minutes.

We can also move some specialized sessions to the BoF room, as Quim pointed above. About dismiss already approved sessions, I'm totally against that.