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Exactly. Pick up any half-decent sci-fi book, or even rewatch Star Trek: TNG. There's plenty of cool stuff left to be done, and even more improvements to things that are already here.

The real problem is that current economy doesn't let those ideas grow.

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I'm hoping, as the "duck and cover" generation dies out, we might see a renaissance in nuclear engineering. Some revival is going on at the moment, but civilization only worked on nuclear ideas for about 30 years (1940-1970). We barely touched the surface. I imagine Musk would have a nuclear rocket division, if that was politically acceptable. Maybe a nuclear technology ecosystem is only possible off Earth.

The other problem is that groundbreaking ideas take increasingly more genius and luck.

This has always been true.

Therefore any kind of work aimed at making peak mental performance better would be the most important, to start cascade of improvement and fuel it.

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