If you mean the actionless Falcon fortress, it really isn't any good.
I agree. Played against one in a regional tournament. Lando and Chewie, literally donuting around the middle board as sub-range one from each other. Lando passing actions, Chewie with DtF I believe?
It really didn't do that well.
If there's one thing about the Falcon I'd change, it's the title. The stock YT-1300 (Outer Rim Smuggler) has 2 attack, 1 defence, 6 hull and 4 shields. The named pilots (Chewie, Lando, Han) fly versions with 3 attack, 1 defence, 8 hull and 5 shields - clearly intended to represent the heavily (and illegally) modified Millennium Falcon.
So - put those stat upgrades on the Millennium Falcon title card:
Millennium Falcon - Title - Unique: This ship has the evade action, +1 attack, +2 hull and +1 shield.
While I'm happy enough to play against anyone and anything they want to field, thematically seeing 2 YT-1300 lists together bugs me. There's only one Falcon.