Add [Hammer.PhysicsSimulated] this hints to the map compiler that the entity is simulated in game and should pre-settle. Internally replace BasePhysicsSimulated @baseclass check with PhysicsSimulated tag and replaces the hacky solution I had implemented with .fgds previously. Make all these [Hammer.] attributes make helpers, metadata, etc. with dictionaries / lists instead of a stringbuilder to fgd format