Improve forest production yield

[JNR13]

UPDATE Improvements SET TraitType = 'TRAIT_CIVILIZATION_NO_PLAYER' WHERE ImprovementType = 'IMPROVEMENT_LUMBER_MILL' ;

should also work, just in case the other solution doesn't remove its unlock icon in the tech tree properly.

 

[Spartan_1683]

Could you figure out a method to make the forest production increase from the same technologies that increase it in game.
+2 Production
+1 additional Production (requires Steel)
+1 additional Production (requires Cybernetics)

For instance, +2 production to all forests when lumber mill tech is unlocked, +1 to forest when steel, cybernetics researched. It would be more balanced that way. I think the same should be done for jungle as well, since theyve added lumber mills for them. As it is right now the only somewhat balanced way is giving the production to forests same as if you had lumber mills and steel unlocked from the start, but its a bit op early game.