Do these inventions just have to be complete or in widespread use?

Smart glass is done and has been for a long time. See Transitions Lenses or Speedglas welding masks. I realize it's cost-prohibitive to scale, but there's also SAGE windows, which use liquid crystal to block light.

I'm not sure what qualifies as an EL panel, but LED panels have gotten crazy bright and cheap and are being used more and more.

I count the conveyors in airports as 'moving sidewalks'. :)

I agree Moon colonization was a fail, but to be fair we could colonize the moon, but why would we want to?