An Empire Inherited

Unarmed attacks appear to apply the proficiency penalty.

Detonators (possibly only thrown by NPCs? Untested) ignore armor.

Melee parry DCs are now tied to Dexterity in the same way as Dodge is.

Stance bonuses don't appear to be applied to ranged attacks, unless they aren't intended to reduce DCs below 10. The screenshot below was captured at 28m with a DE-10 while prone.

Strength bonus is not applied to melee damage. Tested in the screenshot below with the Kashyyk Lance, Force Pike, Stun Baton, and Vibroblade.

Some migrated 2H weapons don't have attack DCs lowered after taking the proficiency feat. I encountered this with the Gamorrean Axe and Blast Hammer. The Cleaver was affected by the proficiency as expected, and I did not test new weapons out of vendors.