I like the cloud improvements & have noticed that aircraft tend to be more buffeted by weather, especially on approach. However, the perennial prob with flight sims is that there really is no overall goal - you take off, fly around & land again. Often it's pretty dull. Check out
www.flightsim.com for decent add ons.
Oh and one more thing, since when did the Americans take over global atc??? or is that naive of me?!