I know its EU but I respect it Wookies have climbing claws so I'm thinking one or two boost dice for climbing (athletics/brawn) checks. Using them in combat is considered greatly dishonorable but can/does happen I'm thinking of +1 to brawl damage and a crit 3. Has anyone else done anything with this? How does it work out?

For Wookiees climbing, I would just treat them as having the right tools for the job in some circumstances (1 boost die). This might not apply every time though, for instance when climbing a rope. I would definitely apply it if scaling a tree or tree-like surface, or something like a climbing wall.

For the "mad claw" variant, yeah just copy the Trandoshan's claws ability. Simple.

For Wookiees climbing, I would just treat them as having the right tools for the job in some circumstances (1 boost die). This might not apply every time though, for instance when climbing a rope. I would definitely apply it if scaling a tree or tree-like surface, or something like a climbing wall.

For the "mad claw" variant, yeah just copy the Trandoshan's claws ability. Simple.

I agree, but with the above, but if the Wookie uses his claws for combat I would add some sort of obligation that the Wook would have to work through to reprove his honor.

For Wookiees climbing, I would just treat them as having the right tools for the job in some circumstances (1 boost die). This might not apply every time though, for instance when climbing a rope. I would definitely apply it if scaling a tree or tree-like surface, or something like a climbing wall.

For the "mad claw" variant, yeah just copy the Trandoshan's claws ability. Simple.

I agree, but with the above, but if the Wookie uses his claws for combat I would add some sort of obligation that the Wook would have to work through to reprove his honor.

Oh totally. Obligation there could be Betrayal, Blackmail, or perhaps Collateral Accountability (from Dangerous Covenants).

Tied into that could be a Motivation to restore his honor, as you say.