A good setup for would-be S4, although I'm not sure I care for Megatron just tossing all his loyal troops away. That seems a more BW Megatron thing to do- I thought better of Animated Megs. Was Sentinel intended to be killed after being strapped to the POKE and fired off like that?
Marty Isenberg said at the Animated panel the following day that they would have found some way to bring back the Decepticons.
I'm pretty sure that there was a line somewhere in the outline saying that Sentinel was out of action or incapacitated or similar, because I remember thinking "oh, he survived", but I wasn't taking notes so I can't verify it.