Can I suggest creating electricity if steam bumps against falling water? I've made rain clouds but with no lightning... it's kinda lame. Possibly work on 'charge' that can build up. You are half way there with the code for the heater and cooler.
It was slow at first when there were minutes between each wave, now it's gone the other way! I don't think nooblet can be called 'easy' when the cost of buildings haven't been balanced against the new wave speed. How about 40 seconds between waves on nooblet instead of 28. I think it will make a huge difference and get more people playing AND enjoying this game...
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 "The Sandbox"){kind=icon}
 "Get Off My Planet"){kind=icon}