No campaign story spoilers here, just item mechanics.
Is my math off, or is Shu Yen's lightsaber severely underwhelming, to the point of not even worth using over the starter staff?
Shu Yen's lightsaber uses a red and blue die, which means on average it does 3 damage on an attack, and gets .5 surges.
The plasteel staff uses a green and yellow die, which means on average it does 2.33 damage on an attack, and gets 1.33 surges.
Even though the lightsaber does .66 more damage per attack, it only gets a single surge 50% of the time, while the staff can get multiple surges (on average 1.33).
Since on both weapons one surge can be transformed into 1 damage, this means the staff actually does more damage on average.
The lightsaber of course can use a surge to do pierce 3 or cleave 2, but that's only if the player rolls a surge on the attack (50% chance, and the Imperial player may negate the surge anyway). The pierce 3 value is lessened on a hero that can remove a defense die from the target's pool, and cleave is only useful if you happen to have two targets adjacent to you (which the imperial player is less likely to do, both knowing you have that ability and having forces that mostly use ranged attacks anyway.)
The lightsaber does 1 automatic damage when the hero uses their ability to reroll their defense die. Of course this only useful if the hero rolled low, otherwise they risk getting a poorer result on their defense for the sake of doing one damage.
On top of that, the staff has reach and the lightsaber doesn't. You might argue the lightsaber is slightly better, but it shouldn't even be a contest. Why am I even debating if I should bother to use a lightsaber over a freakin' tube of plasteel?
There's some circumstances where the saber will be better than the staff, and some where the staff will be better than the saber. Considering the staff is your free starter item and the saber requires success at a side mission (which even on success has the opportunity cost of not having done a different mission), it seems like the saber should have been more in line with the tier 3 weapons, no? As it is, the tier 2 and 3 weapon you can purchase are clearly better. Guess I'll sell my lightsaber and staff to more easily afford, well, almost any other weapon.