Option 1: Solid fuel in Chemical science pack, Sulfur made from PG - "don't make me produce SF inefficiently" people will hate. I don't find it to be a huge deal though, and it would be completely clear that AOP unlocks more efficient Solid Fuel - it could even be written in the technolog...

I don't like the changes in the basic oil processing as it feels like dumbing down the game. And i don't feel like it makes it easier for new players to learn oil processing. Als the current changes now propose we are going to base the production of science across all the packs more on petroleum gas...