Late to the party on this, but the Liberty II is essentially just an optical redesign of the Liberty, eliminating the 500 series "concept" altogether (which is what they should've done years ago, and the Freedom needs the same thing).
The Liberty Independence is, for all intents and purposes, two Legacy bars stacked one on top of the other. Which to me is about the most ridiculous thing imaginable ("Hey, this bar that is already stupid bright isn't enough, LET'S STACK ANOTHER ONE ON TOP OF IT AND RUN THEM SIMULTANEOUSLY!").
Realistically, if you know what you're doing with programming, any WeCan bar can now have any module turn on with Cruise, although since this is an SX bar we're talking about, I'm just jawing for the sake of jawing.