Good post. A while back I saw similar observations in a SimHQ thread, hopefully dynamic weather & rain etc will be added and/or enabled in a future patch. You have a good PC system listed in your sig which should capably handle (I would hope, anyway!) the extra graphic load. I believe a major concern with clouds & weather is the major frame rate hit on less aggressive machines. We'll see if the devs can further optimize the coding to reduce, if not eliminate, this potential deal breaker for many.
As your screenshots & commentary clearly show, there's a huge untapped dimension to CoD which will add tremendously to the challenge and immersion of this sim.
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