Wow just finished my first go through of Jabba's Realm and I can't wait to play through it again already! I won't say any story/plot spoilers but there are definitely decisions you make mid-missions that change how a mission finishes in the 2nd part, and some decisions which will branch you in a different path altogether. There's a certain character who really gets fleshed out, and from what I've heard you will learn more things on future play-thrus if you make different choices. I really enjoyed the first App Campaign, but this one just takes it to a whole new level!
The only thing I will say is that I would make sure to carve out a good 2 hours for each mission, maybe 2-3 hours if you are playing with a group. Just about every mission I experienced so far you will be adding tiles or whole new sections of tiles, so it just takes longer to set things up, and there's a lot more moving parts to keep track of on the map than in the first campaign.
My team was Jarrod, Kotun, Shyla, and Vinto. I had a few pretty neat combos, like for example Shyla had a BD-1 Vibro Ax with a Vibrogenerator, so I wasn't really wasting surges but got to add +2 damage to each attack (it makes you lose 2 surges). That worked awesome with her swords dance and 1 red die so I would usually get another 2-3 damage through. Kotun had a Sporting Blaster and the Bolt Upgrade so 1 attack I could add a red die and a power token to pump out some pretty sick damage..Jarrod had the Force Pike and High-Impact Guard, and in the final mission I drew a turbocharger which let me add surges (i had 3 surges to add damage so that was real nice). Also Jarrod is so freaking fun, I love Scouts Loadout in the app (since deployments keep happening all the time mid-mission), my Jarrod also had a Combat Knife and a R5 Astromech- that astromech was a real MVP because I kept getting crates and money without having to waste precious actions, and most of the items were decent, in 1 mission in particular a shock grenade literally won me the mission. I found Shyla is still good but not as powerful in the app because the App figures usually get boosted movement so moving them around doesn't do as much...except on 1 or 2 mission where you can do some pretty nasty things with it...I love handing out stuff with Kotun, but I did find that her abilities feel sort of cluttered as you go on. I think I need to give her a shot in skirmish now, handing out tokens for free is just so gratifying. Vinto was actually my least favorite, he was okay, he is nice to finish stuff off...Battlefield Experience and Rapid Fire were pretty key with the opportunity to give him rerolls (especially before I got the Disruptor Pistol).