Well maybe nobody knows the answer to your question. You said it yourself, you answer questions that you know the answer to. One of your questions is about rendering using the CLI. There isn't a lot of artists that use the CLI to render, hence the lack of answers. You could try to promote your question by offering a bounty or sharing it through social media. If you still don't get an answer, ask in another forum or IRC and when you find the solution, come back and answer your own question.
As for your second question, let me quote ParallelMayhem's comment to your question:
It probably requires masses of tweaking.
Sometimes the effect you are looking for is achieved by spending a lot of time tweaking and tuning parameters. You have to understand that users won't spend most of their free time trying to achieved the effect you are after. Often you will only be given suggestions and pointers, it is your job to find the setup that replicates the effect based on user's input. And again, when you do, come back and answer your own question.