Don't get me wrong, those can be very powerfull cards. But chewe's 1 pip needs the right situation to be impactfull, while cassian's and luke's are almost always used at their best. the only upside on chewe's 1-pip vs the other 2 (actually 3) alternatives is that you get a better order control. On k2's 3 pip, yes it has a quite unique ,yet situatinal, effect that can win games. I just don't feel like it's needed in that list because of chewe's guardian, luke barrier and the 2 medics. The only effect you can't replicate is the 'ranged attack immunity' part, but to get that you need to kill k2- and that's a bad idea 99% of the time. i prefer cassian's 3 (free recover and danger sense on luke is huge) and luke's 3-pip , while not the best, provide you with a better order control, some Suppression mitigation and a really important dodge on your force user.

for a hero hammer list i found cassian/luke/k2/chewe works really well. Generally the biggest drawback of such litsts is the fact that you must leave some good command cards behind, thus not getting the best from some of your heroes. But in a list with the aforementioned 4 char, you can bring 3x cass and 3xluke cards without losing much (chewe and k2 cards are not the best). i'm looking forward to try this one out: heroquest 789/800 (10 activations) Commanders: - Cassian Andor (90): Seize the Initiative (5)/Overwatch (4), Offensive Push (4)/Duck and Cover (4), Recon Intel (2), A280-CFE Config (10) = 111 - Luke Skywalker (160): Force Push (10), Force Barrier (10), Recon Intel (2) = 182 Operative: - Chewbacca (95): Offensive Push (4), Seize the Initiative (5), Recon Intel (2) = 106 - K-2SO (70): HQ Uplink (10), Jyn's SE-14 Blaster (10) = 90 Corps: - Rebel Troopers = 40 - 2× Rebel Troopers (40): Medical Droid (18) = 116 Special Forces: - 3× Commando Strike Team (20): DH-447 Sniper (28) = 144 • Son of Skywalker, • Crack Shot, •• My Ally is the Force, •• Last Stand, ••• Return of the Jedi, ••• Volunteer Mission, •••• Standing Orders