Having Ben Kenobi would have really helped the Rebels on Ground battles.
I learnt the hard way playing the Rebel campaign, before this. I played through medium mode, and I naively followed the mission without conquering planets. In the end, I was threatened from all sides, and even before I had a fleet I was threatened by a few Victory SDs.
So I started a new easy game, and, at the same point of time as my former medium game, I had conquered 100% of the known galaxy (the planets you could travel to).
When you slice a person, do you slice him with the fastest stroke, or do you forcefully incapacitate him?