A senile old Ackbar, shouting "IT'S A TRAP!" while jumping round corners to scare his grandkids. Seriously though, like most other people I want to see the big three but in a supporting role. Luke could possibly be running a new Jedi training facility like he is in the Jedi Knight games. I'm sure if he is back, then Ewan will be back to do force ghost Obi Wan to offer him the usual guidance. Han being killed off is also a good idea, I can just imagine a scene like that, it would be very powerful. Plus it would let Ford off from coming back ever again I'm not sure he would be willing to come back even for just the first one. Fett would be great, the droids are a given. If Han comes back, then surely Chewie will also. Not bloody CGI Chewie this time, I hope. I think they need to be careful though. You don't want to just start throwing in crowd pleasers everywhere or it will get silly. Those characters had their times in the OT and PT. Qui Gon for example, it wouldn't make much sense him appearing, unless he was with Obi Wan I guess.