After reading the Wave 2 previews I'm wondering which ships/upgrade/strategies will be the easiest to do well with right out of the box. To put it another way what ships/upgrades/strategies do you think will have the steepest learning curve?
As an example I think the Devastator title sounds like it's going to take practice to utilize well and may get you killed.
Vader also has the possibility of leaving yourself vulnerable at the wrong time, but I think he will be less risky than Devastator. I might consider taking him at Sullust.
Ackbar seems like he will easily fit to already existing Rebel strategies and therefore would be an easy choice to include.
That brings up another point. Are you going to try out a new strategy that is only possible with the wave 2 ships or are you going to try and just fit the wave 2 ships into a list/strategy you've already mastered?