Nayc, ni
cuyi Mand'alor. (Well, at least around here anyways, lol)
Nice idea though. I like the Crushgaunts ability.
With the CE, are you trying to let it be like Grand Moff Tarkin's where you can activate 1, 2, or 3 characters per turn, or do you want it to be specifically that you activate 3 instead of 2?
I think a squad that ran in the opposite vein of San Hill would be pretty cool, especially one made of Mandalorians, since they have so much damage potential anyways.
However, any Mandos you're going to have to watch out with how the other CEs apply. This guy's stats are REALLY good, and combined with Mandalore the Indomitable and a Mando Commander, this guy could Mobile Attack, and hit an adjacent enemy with a +21 attack for 50 damage per hit. That's better than Bane.
I think if you drop his Damage to 20, and drop the attack to probably 14 or 15, then he'd be just about right.