yep Thrawn is well worth putting in and GK or Old Ben for top 50 depending on your shard.
if your struggling go with Rex lead, CLS, Raid Han, Thrawn + either GK or Old Ben
all shards are different and as you didnt link your swgoh.gg thats about as much help as you will get tbh
Yes, Thrawn and Old Ben/General Kenobi (either is fine, but you'll want the Zeta on Devoted Protector, if you go with Old Ben) will work out much better for you than Chaze.
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if your struggling go with Rex lead, CLS, Raid Han, Thrawn + either GK or Old Ben
all shards are different and as you didnt link your swgoh.gg thats about as much help as you will get tbh
You can even contain a Palp lead Traya on offense, dont stand a chance vs Traya lead sith though