Mon Karren seems to be the hot MC80 title du jour, but my own interest lies with the possibilities of the Liberty title. Now, it may seem like a suboptimal use of your MC80 star/battle cruiser as the ship lends itself so well to a pure firepower build, but for the first time, we have a Rebel cap ship (with significant firepower), that has a support team slot and a weapons team slot.
Amongst the new squadron-specific upgrade cards the combination of FCT and Flight Commander seems to be a winning team, available for the Yavaris and other Neb-B escorts. The Liberty can field this combination as well, and can add in Flight Controllers, helping up to four squadrons win the space superiority battle. Previously to run Flight Controllers the rebels depended on the AF2b, which in my mind has always had a somewhat anemic level of firepower (on its own). Now we have a true capital ship that can put out a decent amount of dice on its own, as well as really contribute to the squadron battle.
There are downsides of course. To name a few:
1) You can only have one. Without the Liberty title, your Flight Controllers bonus is less effective, though perhaps still a possibility if you're intent on winning the squadron battle.
2) you're giving up gunnery teams or any of the other ship-focused weapons team upgrades. Gunnery teams on this ship was hoped for by many, with good reason. Still, leaving it out gives you the option of selecting Advanced Gunnery as a mission. Ruthless Strategists is also possible but the black dice range limitation makes it less attractive.
3) you need a steady token source to capitalize on Liberty's effect, at least until you've won the squadron superiority game. This likely means a Comms transport, or Tantive IV. (Possibly Garm +/- vet captain, for a more limited effect). These ships can serve other purposes, but there's no question this is a resource intensive build.
With the anticipated increase in squadrons for wave 3/4 lists I think the Liberty has a role. However I wonder if the opportunity cost is too great? Do you see Liberty pushing squadrons in your future lists?