Is any of the OS code actually optimized from earlier versions? Down at the building-block level?
Or is this what we expected and just some included applets and mini-features baked in?
Good question. Don't let the fanboys who voted your post down discourage you... You asked a valid question. The reason many people (such as myself) will likely be sticking with Snow Leopard is because it was an OS based on code actually optimized from earlier versions, down at the building block level.
Fanboys are not critical. If Apple releases something excellent, fanboys reply with praise. If Apple releases a piece of crap, fanboys reply with the same level of praise.