Have you tried using the Rings string/organ Easter egg? I use that quite a bit. Rings and Clouds were two of my first modules and truth be told, I don't really care for them that much. They're ok, but they're not very inspirational for me (especially Clouds).
One module you may want to consider is the Synthesis Technology E352 Cloud Terrarium. I wasn't immediately smitten with it but I love it now. It checks the ambient AND dark boxes for you. It's a big module though. I've been concentrating more on analog VCOs, filters, and LPGs lately, so I may not be the right person to really answer this question for you.
Looking at your rack, it looks like you would probably benefit from considerably more modulation sources (Zadar, Batumi, Quadrax, random, etc.). The 4ms SWN might fit the bill for you since it has built-in LFOs and the wavetables can do pretty or dark.
Have fun and good luck!